Abstract
Many teachers struggle with the classroom management skills necessary to support students with disabilities. Teacher evaluation is a potential method for supporting teachers’ use of classroom management strategies. The authors evaluate the extent to which classroom management was included in state teacher evaluation rubrics and the types of classroom management topics that were included in the rubrics. They find that while one fifth of standards and indicators were related to classroom management, there was large variability across states. Rubrics that included classroom management focused on proactive strategies, but often did not include specific evidence-based practices that could help teachers improve their classroom management skills. Very few rubrics included any focus on how to address student misbehavior. In light of these findings, the authors provide a discussion of the importance of including high-quality standards and indicators about classroom management to support teachers of students with disabilities.
Throughout the country, teachers report that they are unprepared to handle behavior problems in their classrooms (National Center for Education Statistics [NCES], 2015), that student misbehavior interferes with their teaching (NCES, 2015), and that they are not accepting of having students who exhibit problem behavior in their classrooms (Martin, Lloyd, Kauffman, & Coyne, 1995; Olson, Chalmers, & Hoover, 1997; Soodak, Podell, & Lehman, 1998; Westling, 2010). Teacher preparation programs rarely include training on classroom management (Freeman, Simonsen, Briere, & MacSuga-Gage, 2014; Greenberg, Putman, & Walsh, 2014; Oliver & Reschly, 2010; Reiff, Evans, & Cass, 1991), likely exacerbating or causing these challenges. The lack of teacher training in classroom management is particularly worrisome for teachers of students with disabilities (SWDs) as these students may be at greater risk for exhibiting problem behavior than their peers without disabilities (Blackorby et al., 2005; U.S. Department of Education, 2006).
One proposed method for improving in-service teacher skills is through systematic teacher evaluation. Systematic teacher evaluation aims to improve teaching by identifying areas in need of improvement and providing teachers with additional supports (Papay, 2012). Recent federal initiatives, Race to the Top (U.S. Department of Education, 2009) and Elementary and Secondary Education Act flexibility waivers (U.S. Department of Education, 2012), incentivized states to develop and implement teacher evaluation systems and evidence suggests that evaluation systems may lead to improvements in student outcomes (Dee & Wyckoff, 2015; Steinberg & Sartain, 2015; Taylor & Tyler, 2012). It is, however, not clear whether teacher evaluation tools incorporate the assessment of classroom management skills, skills integral for supporting SWDs in general and special education classrooms.
In this study, we evaluated the extent to which classroom management practices were included in state teacher evaluation rubrics and the classroom management topics addressed by evaluation rubrics. The exclusion of classroom management from teacher evaluation rubrics could be problematic for teachers who have SWDs in their classrooms and who may need more support and training in implementing effective classroom management programs. We begin the literature review by describing effective classroom management practices identified in research. We then review the existing research on teacher evaluation.
Literature Review
Effective Classroom Management
Though teachers report that they are unprepared to manage classroom behavior and discipline for difficult students (NCES, 2015), a large body of research has identified effective classroom management interventions (Cooper & Scott, 2017; Mitchell, Hirn, & Lewis, 2017; Simonsen, Fairbanks, Briesch, Myers, & Sugai, 2008). In one review of the literature on classroom management practices, Simonsen and colleagues (2008) noted five overarching classroom domains supported by research: (a) maximize structure and predictability; (b) post, teach, review, monitor, and reinforce expectations; (c) actively engage students in observable ways; (d) use a continuum of strategies to acknowledge appropriate behavior; and (e) use a continuum of strategies to respond to inappropriate behavior. Within these domains, strategies such as active supervision (De Pry & Sugai, 2002), increased opportunities to respond (Moore-Partin, Robertson, Maggin, Oliver, & Wehby, 2010; Sutherland & Wehby, 2001b), and praise (Sutherland & Wehby, 2001a) are examples of classroom management practices that have demonstrated positive impact on student behavior. Teachers may report that they are underprepared in classroom management, but effective classroom management practices are well documented in research.
Additional evidence suggests that strong classroom management is associated with student academic and behavioral outcomes (Brownell et al., 2009; Garwood, Vernon-Feagans, & Family Life Project Key Investigators, 2017). For example, Brownell et al. (2009) found that beginning special education teachers with higher ratings on classroom management strategies had students who made greater gains in reading. The use of classroom management practices can positively impact student behavior by decreasing problem behaviors (Lambert, Cartledge, Heward, & Lo, 2006; Stormont, Smith, & Lewis, 2007), increasing on-task behavior (Williamson, Campbell-Whatley, & Lo, 2009), and increasing positive verbal interactions (Hansen & Lignugaris-Kraft, 2005). Considering the poor academic and social outcomes for students who display problem behaviors, strong classroom management practices are essential for successful student outcomes. Supporting teacher development in classroom management is especially important as a significant portion of SWDs receive their academic instruction in general education classrooms (U.S. Department of Education, 2016). General education teachers, however, may have less knowledge of behavior than special education teachers (King-Sears, Carran, Dammann, & Arter, 2012).
Teacher Evaluation as a Tool for Improvement
Providing feedback via formal evaluation procedures may be one method for improving teacher classroom management skills and supporting the behaviors of SWDs. Evaluation can change teacher practices by helping teachers learn new skills or by increasing teacher awareness of desired instructional practices (Taylor & Tyler, 2012). Teacher evaluations typically include multiple components including (a) results of classroom observations, (b) quantitative measures of student outcomes such as value-added or student learning objectives, and/or (c) surveys of students and parents (Steinberg & Donaldson, 2016). In this article, we focused on the observation component of evaluation. Within these systems, teachers are evaluated and provided with feedback based on what is seen/measured by the individual conducting the observation (Steinberg & Donaldson, 2016). Feedback from the observation component of evaluation may apply to both academic instructional practices and classroom management skills.
Research has examined if the use of systematic teacher evaluation systems results in improved student academic outcomes. For example, Taylor and Tyler (2012) evaluated the impact of a teacher evaluation system with observations by peer evaluators and administrators using the Framework for Teaching (FFT; Danielson, 1996) on the value-added scores of midcareer teachers. Teachers in this study had an average growth in math value-added of 0.12 standard deviations after the year they were evaluated. The results of this study and others (Dee & Wyckoff, 2015; Steinberg & Sartain, 2015) suggest that systematic evaluation that includes observations may be a mechanism for improving teacher practice; teachers may change their instruction based on the evaluation process.
However, not all teacher evaluation systems will result in improved teacher performance. Successful teacher evaluation partially depends on the quality of the observation rubrics used during the evaluation process. High-quality rubrics can inform teaching and professional development (Pianta & Hamre, 2009) and may correlate with teacher value-added scores (Grossman, Cohen, Ronfeldt, & Brown, 2014; Grossman, Loeb, Cohen, & Wyckoff, 2013; Hill, Kapitula, & Umland, 2011). In addition, observation rubrics may capture teaching practices valued by schools that are not entirely captured in value-added scores (Grossman et al., 2014) and provide teachers with information about expected and encouraged teacher practices that are reinforced by administrators during the evaluation process (Pianta & Hamre, 2009).
Teacher Evaluation and Special Education
As compared with general education practices, research related to evaluation as a mechanism for improving the outcomes of SWDs or supporting special education teachers is scarce. Primarily, studies have focused on the inclusion of SWDs in value-added measures (Buzick & Jones, 2015; Jones, Buzick, & Turkan, 2013; Steinbrecher, Selig, Cosbey, & Thorstensen, 2014) or the appropriateness of evaluation systems in capturing the role of special educators (Jones & Brownell, 2014; Sledge & Pazey, 2013). In addition, most states do not provide separate evaluation rubrics for special education teachers, and the information that states do provide to districts regarding special education teacher evaluation primarily focuses on how to incorporate student growth into evaluation scores for special education teachers (Jones & Gilmour, in press).
Some researchers have recommended the development of a separate tool for evaluating special education teachers (e.g., Holdheide, Goe, Croft, & Reschly, 2010; Jones & Gilmour, in press; Semmelroth & Johnson, 2014; Sledge & Pazey, 2013). Many SWDs, however, receive the majority of their instruction in general education classrooms (U.S. Department of Education, 2016). As such, an evaluation rubric explicitly addressing components of special education teaching effectiveness in special education settings may not provide enough information or guidance to teachers struggling to support the behavior of these students in a general education setting. Teachers may benefit from a comprehensive evaluation rubric that incorporates classroom management strategies to support all learners, especially those with disabilities.
Study Purpose
Teacher evaluation is one proposed tool for developing and sustaining effective teaching practices. The evaluation process, however, may not support teacher growth in classroom management if rubrics do not include these skills as measured components. The exclusion of classroom management on teacher evaluation rubrics could be particularly problematic for teachers who have SWDs in their classrooms. The objectives of this study were (a) to examine the extent to which classroom management items are included as standards and indicators in each state’s teacher evaluation and (b) to examine the content of the classroom management items.
Method
Sample
Identifying state rubrics for inclusion was a multistep process. First, we looked at the data on each state’s teacher evaluation system available from the American Institutes for Research (2015) database and the National Council on Teacher Quality’s State of the States report (Doherty & Jacobs, 2015). We included the District of Columbia (DC) and referred to DC as a state throughout this article for ease of discussion. Through these databases, we identified states that had required or model rubrics. Second, we compared these data to information available on state websites about specific requirements for evaluation rubrics.
Instead of evaluating all possible rubrics at the state and district level, we coded only state-developed required and model rubrics. We included state rubrics based on published evaluation tools if they had been altered by the state. We included states that created rubrics based on professional standards in the state. We downloaded the most current rubric as of January 15, 2017, that we could access from state department of education websites and used these publicly available documents in our analyses. Several states used commercially published evaluation rubrics, such as Danielson’s FFT, or widely used standards, such as InTASC standards, verbatim. We coded the FFT and InTASC instruments separately, rather than evaluate the same tool multiple times by state. We did not separately code state rubrics that were taken verbatim from published instruments. Because many states use the InTASC standards or the FFT as their main evaluation system, we also coded the FFT and InTASC standards and include them in our sample. Our final sample consisted of 30 rubrics; 28 states, the InTASC standards, and the FFT (listed in Table 1). A list of states and reasons for exclusion are included in the appendix.
Summary of Standards and Indicators by State.
Note. CM = classroom management; FFT = Framework for Teaching; NR = not reported.
Rubric Coding
We coded evaluation rubrics for (a) basic descriptive information, (b) the inclusion of classroom management components, and (c) the content of the classroom management components. We recorded if it was stated somewhere in the rubric or accompanying documentation that the evaluation was based on an existing published rubric (e.g., FFT) or set of teaching standards, but did not use the instrument or standards verbatim. Observation rubrics typically include two parts that we referred to as standards and indicators. Standards address a larger component of teaching, for example, the section titled Planning and Preparation on the FFT. Indicators provide more information about the actions that make up the larger component. Indicators are focused on specificity while standards are general constructs. For example, an indicator under Planning and Preparation on the FFT is Setting Instructional Outcomes. We counted the number of standards, the largest level of evaluation, and then counted the number of indicators, the smaller level of evaluation nested under the standards.
Next, we recorded if the standard or indicator included any component of classroom management. We used an iterative process to develop our final list of codes based on the categories of classroom management reported by Simonsen et al. (2008) and key words identified in the documents (Miles & Huberman, 1994). The final list of topics and key words are listed in Table 2. We coded the standard or indicator as related to classroom management if it included a key word or synonym.
Terms Coded as Related to Classroom Management Based on Simonsen, Fairbanks, Briesch, Myers, and Sugai (2008).
Note. We also coded the standard or indicator as related to classroom management if it included a synonym for any of these terms.
Most rubrics included descriptions of teacher practice at each performance level (e.g., Proficient, Exceptional) for the standard or indicator. If the description of a performance level included any terms we considered to be related to classroom management, the indicator or standard was coded as related to classroom management. All standards and indicators were coded separately. If a standard was about classroom management, it did not necessarily mean that all the indicators under that standard were related to classroom management. Conversely, if a standard was not about classroom management, the indicators nested under the standard could be coded as assessing classroom management.
Finally, we coded the classroom management topic of each indicator that was about classroom management. We did not code the content of standards because they addressed general skills. In contrast, the indicators provided specific information about measured teacher behavior. First, we divided topics into four categories based on Simonsen et al. (2008): structure and predictability, expectations, engagement, acknowledgment of behavior, and response to behavior. Then, we added two categories, general and learning environment. The general category captured indicators that simply mentioned classroom management or student behavior but none of the four topics based on Simonsen et al. (2008). We coded indicators’ topics as learning environment if they included general statements about the learning environment or classroom climate but none of the four topics based on Simonsen et al. (2008). Table 3 includes the general topics and specific content included in each topic.
Content Coding.
Training Procedures
The first author trained the other authors in the coding procedures. During a 1-hour training meeting, the first author presented the components categorized as classroom management (Table 2) and rubric content (Table 3) before modeling coding a rubric. Then, the other authors coded a training rubric until each met a criterion of 90% exact agreement with the first author before independently coding the remaining evaluation rubrics. Each rubric was independently coded by two coders. The team met as a group to resolve any coding discrepancies. The interrater agreement for standards, using exact agreement, averaged 97.50 (SD = 7.39, range = 75-100). The interrater agreement for indicators averaged 92.34% (SD = 6.26, range = 75-100). The interrater agreement for content coding was 89.34%.
Analysis
Because of the exploratory nature of our research, we used basic descriptive statistics to address our primary research question. For each state, we calculated the percentage of standards related to classroom management. Across the entire sample, we calculated the average percentage of standards related to classroom management and examined the range. We followed the same approach for indicators. We then examined the percentage of classroom management standards and indicators that included information about each classroom management topic. Examining the average percentage of standards and indicators related to classroom management provided us with information about the extent to which classroom management was included in evaluation rubrics and the classroom management content addressed in these rubrics.
Results
Classroom Management Standards and Indicators
Standards
We evaluated the extent to which classroom management was included in state teacher evaluation rubrics at the standard and indicator levels. In Table 1, we present the number of standards, number of standards about classroom management, number of indicators, and number of indicators about classroom management for each state rubric we reviewed. The average number of standards on the rubrics was 5.8 (SD = 2.62), with a range of two to 10. The average number of standards about classroom management was 1.03 (SD = 0.49), with a range of zero to two. Four states did not have any standards that addressed classroom management, 21 states had one standard addressing classroom management, and five states had two standards addressing classroom management. The FFT included four standards about classroom management, 25% of the total FFT standards. On the InTASC rubric, one out of the 10 standards involved classroom management. The percentage of standards about classroom management ranged from 0% to 50%. The average percentage of standards about classroom management on the rubrics we reviewed was 20.47 (SD = 12.10).
Indicators
There was more variability in the number of indicators across rubrics (see Table 3). The average number of indicators was 27.07 (SD = 16.28), with a range of five to 75. The average number of indicators about classroom management was 4.70 (SD = 2.28), ranging from one indicator to nine indicators about classroom management. The percentage of indicators about classroom management ranged from 1.33% to 60%. Louisiana had three indicators about classroom management and a small total number of indicators (five), resulting in the highest percentage (60%) of indicators about classroom management. The FFT included 22 total indicators, with six, 27.27%, related to classroom management. Out of 75 total indicators on the InTASC standards, there was one related to classroom management. The average percentage of indicators about classroom management was 22.13 (SD = 12.80).
Classroom Management Content
After we identified the standards and indicators on each rubric related to classroom management, we coded each indicator by topic. These results are reported in Table 4. Indicators most often addressed a teachers’ ability to actively engage their students (40.3%). Many indicators, 37.59%, dealt with the classroom environment or climate. Thirty-four percent and 28% percent of indicators dealt with maximizing structure and predictability or establishing rules, respectively. Only one indicator addressed classroom management generally without addressing one of the more specific content areas (0.71%). Only 13.79% of indicators made any mention of how teachers addressed inappropriate student behavior.
Topics Covered by Indicators Related to Classroom Management.
Note. The percentage of indicators addressing each content area does not sum to 100% because indicators could receive multiple content codes.
Discussion
The purpose of this study was to examine the extent to which classroom management is included on observation rubrics used for teacher evaluation. Classroom management is an important skill for all teachers, especially for teachers working with SWDs. States have adopted new teacher evaluation systems in an effort to improve teaching effectiveness, but rubrics that exclude classroom management may overlook an important teacher skill related to student outcomes.
We found that about 20% of standards and indicators on the evaluation rubrics we reviewed addressed classroom management. The classroom management topics addressed by the indicators varied, with most focused on proactive classroom management strategies such as actively engaging students, posting and reinforcing expectations, and maximizing the structure and predictability of the classrooms. Very few indicators, 13.48%, addressed how a teacher responded to inappropriate behavior. In the following sections, we discuss how classroom management is currently integrated into evaluation rubrics, the focus on proactive strategies, and recommendations for improving and augmenting evaluation rubrics.
Use of Rubrics as a Tool
Evaluation rubrics include indicators that outline the specific practices on which teachers are rated by evaluators. These ratings translate into high-stakes outcomes for teachers: a teacher may be retained, given a leadership opportunity, or, in some districts, paid more based in some part on these ratings (Steinberg & Donaldson, 2016). More importantly, evaluations are a method for helping teachers to improve their practice. Given the importance of rubrics as development tools, the language used to describe desired practices, specifically for indicators, should be clear, specific, and actionable.
We found that both the number and, more importantly, the explicitness of indicators related to classroom management varied across rubrics. This can be problematic for both teachers and evaluators. Other researchers (Hill & Grossman, 2013; Kraft & Gilmour, 2016) point out that the challenges of implementing evaluation could be partially due to vague language. For example, language such as “creates a safe and purposeful learning environment” does not provide observable information about what safe looks like. On the contrary, language such as “the teacher creates a safe and purposeful learning environment by setting clear expectations to guide student classroom behavior” provides more utility to teachers by indicating a practice they can use that can facilitate student learning. Rubrics are unlikely to assist teachers in changing their practice, or provide guidance to evaluators on how to assist teachers in changing their practice, if the language used on the rubric does not precisely describe desired teacher practices. This seems particularly important in regard to classroom management, as many states focused on less well-defined topics such as the learning environment or classroom climate.
Focus on Prevention
On the rubrics we reviewed, most of the indicators that addressed classroom management focused on proactive, preventive strategies, but the indicators did not include guidelines for responding to negative behavior. For example, “establishes clear expectations for classroom rules, routines, and procedures” is a strategy that can be implemented class-wide to promote positive behavior and lessen the likelihood of misbehavior (Georgia Department of Education, 2011, 7.2), while “redirects student off-task behavior to make the most of instructional time” is a method to counteract problem behavior that has already occurred (California Standards for the Teaching Profession, 2009, 2.7). California’s focus on what to do when misbehavior occurs was rare; only 15 other rubrics mentioned responding to inappropriate behavior.
Clearly, helping teachers take a proactive approach to classroom management is important, but the nearly total emphasis on universal behavior support may be problematic when teachers have students with significant behavioral needs, such as those with or at risk for emotional and behavioral disorder (EBD) in their classrooms. Prevention is important and a large component of School-Wide Positive Behavioral Interventions and Supports (SWPBIS) and other multitiered systems for supporting student behavior, but within a tiered system, a small proportion of students are likely to exhibit problem behavior despite generally effective, proactive classroom management strategies (Sugai & Horner, 2006). The absence of expectations for how to respond when students do misbehavior may leave teachers without tools for appropriately responding to misbehavior. This omission is particularly alarming for teachers who have students with or at risk for EBD, students who may exhibit frequent problem behavior, in their classrooms. For these students, a de-emphasis on effective teacher response to negative behavior could result in punitive disciplinary action, loss of instructional time, and more restrictive placements (U.S. Department of Education, 2016). Focusing on proactive classroom management strategies is important, but teachers may need more guidance on how to address misbehavior when it arises than the guidance and strategies included in evaluation rubrics.
Limitations
The results of this review should be interpreted with limitations in mind. We examined state-developed model or required rubrics, the InTASC standards, and FFT. Many states allow districts to use locally designed rubrics; therefore, rubrics used by districts may vary from the rubrics we reviewed. In addition, we evaluated the content of the rubrics but not the actual implementation. The utility of a rubric depends in part on the feedback teachers receive from their evaluators. Despite these limitations, the descriptive information in this review is useful for policymakers and practitioners.
Recommendations
Based on the results of this review, we offer four recommendations. First, many state rubrics in this review included classroom management standards, but not all. As most rubrics contained an overwhelming number of indicators, implementers may attend more to the overall standards when providing feedback and development opportunities to teachers (Kraft & Gilmour, 2016). States that have not included a standard related to classroom management should include such a standard on subsequent versions of observation rubrics. This is especially pertinent given that many teachers struggle to manage problem behavior in the classroom (NCES, 2015).
Our second recommendation is related to the utility of the indicators. Most standards across the states did not provide explicit descriptions of desired teacher behaviors, but the corresponding indicators did provide more specific information, particularly around academic instruction. These indicators clarified teacher behaviors that earned a proficient or higher rating on the standard, thus providing useful information for feedback and coaching. For these indicators to be useful to teachers and evaluators, however, explicit descriptions of teacher behaviors related to classroom management should be included. For example, an indicator stating “the teacher will create a positive classroom environment” is less useful than an indicator that states “the teacher will teach, post, and reinforce positive student behavior expectations.” Rubrics with vague language should be revised to include explicit descriptions of expected classroom management behavior.
Third, most evaluation rubrics do not address teacher responses to student misbehavior. While we applaud the focus on positive, proactive strategies that align with SWPBIS and other multitiered approaches to behavior, we question the exclusion of what a teacher should do when problem behavior occurs. Prevention might be enough for many students, but teachers likely need more support for what to do when they have students who are more likely to exhibit problem behavior, such as SWDs, in their classes. Perhaps including strategies for addressing misbehavior does not belong on evaluation rubrics, but most teachers will likely need access to additional guidance on how to respond to student behavior in the likely situation that it occurs.
Fourth, evaluation users, at the teacher preparation level or in schools, may need to supplement evaluation systems with other measures that address classroom management depending on the extent to which their local rubrics address classroom management. As teacher education programs aim to align their evaluation and training of preservice teachers with the skills and competencies that these teachers will be evaluated on once in the field, the lack of clarity, or inclusion, of classroom management skills may decrease the amount of time focused on these important skills. Teacher preparation programs and in-service teacher evaluators could supplement their observation protocols with direct observation measures such as the Brief Student-Teacher Classroom Interaction Observation (Reinke, Herman, & Newcomer, 2016). We recognize that it might be infeasible to add additional measures to already complicated evaluation systems.
In recent years, states have heavily invested in teacher evaluation systems as one method to improve teaching quality. In this article, we reviewed state evaluation rubrics to examine the extent to which classroom management was included in observation rubrics. We found that in most states one fifth of the standards and indicators were related to classroom management, but the topics included in the rubrics, and the usefulness of language, varied widely. Some states, however, did not include any standards related to classroom management. This is worrisome in light of prior research suggesting that teachers enter the workforce unprepared in classroom management and in need of more in-service support with these skills. For rubrics to support teacher development in classroom management, they must provide detailed information about classroom management that is useful to teachers and evaluators. This is especially important for supporting teachers, in both general education and special education settings, who instruct SWDs. Classroom management skills are integral for the successful inclusion of SWDs in general education classrooms and for improving SWDs’ academic outcomes.
Footnotes
Appendix
States That Were Not Included and Reasons for Exclusion.
| State | Exclusion reason |
|---|---|
| AZ | District choice/State does not provide a model or suggested evaluation rubric. |
| AR | Uses FFT rubric. |
| FL | Uses Marzano rubric. |
| HI | Uses FFT rubric. |
| DE | Uses FFT rubric. |
| ID | Uses FFT rubric. |
| KT | Uses FFT rubric. |
| MD | Uses FFT rubric. |
| MI | District choice/State does not provide a model or suggested evaluation rubric. |
| NH | District choice/State does not provide a model or suggested evaluation rubric. |
| NJ | District choice/State does not provide a model or suggested evaluation rubric. |
| NY | District choice/State does not provide a model or suggested evaluation rubric. |
| ND | District choice/State does not provide a model or suggested evaluation rubric. |
| OK | District choice/State does not provide a model or suggested evaluation rubric. |
| OR | District choice/State does not provide a model or suggested evaluation rubric. |
| PA | Uses FFT rubric. |
| SD | Uses FFT rubric. |
| VT | District choice/State does not provide a model or suggested evaluation rubric. |
| WA | District choice/State does not provide a model or suggested evaluation rubric. |
| WI | Uses FFT rubric. |
| WY | District choice/State does not provide a model or suggested evaluation rubric. |
Note. FFT = Framework for Teaching.
Authors’ Note
The second and third authors contributed equally to this article.
Declaration of Conflicting Interests
The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
Funding
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: The first, second, and third authors were supported by grants from the Office of Special Education Programs (H325D120091, 325H140001, and H325D140072, respectively)
