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- NCEO Reports: Using Interim Assessments to Appropriately Measure What Students with Disabilities Know and Can Do: Advisory Panel Takeaways and NCEO Recommendations (#427)
A report on a virtual meeting NCEO held on February 16 and 17, 2021 of an Interim Assessment Advisory Panel to tap into the panel members’ collective knowledge about using interim assessments to support valid interpretations of what students with disabilities know and can do. The panel represented psychometricians, researchers knowledgeable about students with disabilities, state education agency (SEA) assessment and special education leaders, local education agency (LEA) leaders, and parents. Interim assessments refer to assessments that are administered several times during a school year to measure student progress. The meeting purpose was to develop and disseminate guidance to state departments of education on how to enable all students with disabilities, including students with the most significant cognitive disabilities and English learners with disabilities, to participate in interim assessments in ways that yield valid inferences of what they know and can do.
Published: May 2021 - Proceedings of the NCEO Interim Assessment Convening: Measuring What Students with Disabilities Know and Can Do Using Interim Assessments
This report contains the proceeding of the Interim Assessment Convening on Measuring What Students with Disabilities Know and Can Do Using Interim Assessments that was hosted by NCEO, and held on July 26 and 27, 2021. The purpose of the Convening was to share information about how to enable the participation of all students with disabilities, including students with the most significant cognitive disabilities and English learners with disabilities, in interim assessments in ways that support obtaining valid results of what they know and can do. The Convening also provided an opportunity for State education agency (SEA) teams to develop goals and action items, based on the opportunities and challenges identified, that would result in more valid measurement of what students with disabilities know and can do at both the SEA and local education agency (LEA) levels. This Proceedings document was developed to provide a summary of the Convening. It includes appendices and links to resources that were shared by states and others at the Convening.
Published: December 2021 
NCEO State Surveys: 2003 State Special Education Outcomes - Marching OnThis year 2003 report summarizes findings of a survey given to all states that addresses new initiatives, trends, accomplishments, and emerging issues as states document the academic achievement of students with disabilities.
Published: December 2003- NCEO State Surveys: 2025 Survey of States: Trends and Issues in Statewide Assessment of Students with DisabilitiesFormats: Online
This report summarizes the seventeenth survey of states by NCEO, collecting over three decades of data on the participation and performance of students with disabilities in statewide assessments. Forty-five jurisdictions responded, revealing key trends in state practices. Key findings show that states primarily monitored accessibility features by reviewing IEP records and conducting site audits. To support participation in alternate assessments (AA-AAAS), states focused on training and data sharing. However, a major challenge is meeting the federal 1% limit for AA-AAAS, largely due to concerns over inappropriate student identification and the lack of staff training. For Alt-ELP assessments, states ensured proper assignment through revised guidelines and training. Growth models were common for general assessments but rarely used for AA-AAAS and Alt-ELP assessments. States mainly disaggregated general assessment results by disability category to analyze trends. The survey confirms states are prioritizing training and monitoring to align assessment practices with federal requirements.
Published: November 2025 - NCEO Brief: Interim Assessment Practices for Students with Disabilities (#22)
This Brief contains a scan of the interim assessment landscape, and is focused on the availability of documentation supporting the appropriateness of these assessments for students with disabilities. The purpose of this Brief is to advise the development of guidance that facilitates improved practices related to the use of interim assessments for students with disabilities.
Published: April 2021 - A State Discussion Guide to Understanding, Developing and Sustaining Balanced Assessment Systems That Are Inclusive of All Students
This state discussion guide is designed to facilitate discussions within state education agencies about how to create and sustain a balanced assessment system that is inclusive of all students, including students with disabilities, English learners, and English learners with disabilities. It is co-published by the Council of Chief State School Officers (CCSSO) and NCEO.
Published: June 2024 
NCEO State Surveys: 2001 State Special Education Outcomes - A Report on State Activities at the Beginning of a New DecadeThis year 2001 report summarizes a survey given to all states that addresses participation and performance of students with disabilities in statewide assessments and the first year of administering alternate assessments and including the results in accountability systems. The report is intended to help states view their own progress.
Published: June 2001- NCEO Reports: Developing Requests for Proposals (RFPs) for Interim Assessments that Include All Students (#445)
This report provides a resource for state and district assessment staff as they develop requests for proposals (RFPs) for interim assessments for all of their students, including those who require accessibility features, to demonstrate their knowledge and skills as well as those who may need an alternate assessment because of their significant cognitive disability. This report provides ideas for ensuring that bids for interim assessments address the needs of all students, including students with disabilities and English learners.
Published: January 2025 - NCEO Newsletter: February 2025 issueFormats: Online
NCEO’s February 2025 newsletter focuses on providing essential resources to support decision making around assessment participation. We highlight briefs on determining appropriate assessment paths for students along with tools to help teams select and implement accessibility features that best meet individual student needs. Articles also highlight some of NCEO’s newest resources on assessment participation and accessibility features decisions and a few of NCEO’s favorite resources on accessibility features. There is also an article on NCEO's presence at several major spring conferences.
Published: February 2025 - NCEO State Surveys: 2023 Survey of States: Trends, Accomplishments, and Challenges
This report highlights the findings of the sixteenth survey of states conducted by the National Center on Educational Outcomes (NCEO). It has been administered for more than three decades to collect information from states about the participation and performance of students with disabilities in the assessments that comprise the comprehensive assessment system. Topics addressed included: accessibility and accommodations, alternate assessments based on alternate academic achievement standards (AA-AAAS), interim assessments, accountability, English learners with disabilities, technology, graduation requirements, State Systemic Improvement Plans (SSIPs) / State-identified Measurable Results (SiMRs), family engagement, and technical assistance needs.
Published: February 2024 
National Center on Educational Outcomes (NCEO) WebsiteFormats: OnlineA website presenting NCEO, which is a federally-funded technical assistance center that supports states and districts on issues related to inclusive assessments, particularly for students with disabilities, English learners (ELs), and ELs with disabilities. NCEO has a rich set of reports and other publications on a range of topics related to educational assessments. NCEO is one of ICI's affiliated centers.
Published: 2000