National Center on Educational Outcomes (NCEO)
The National Center on Educational Outcomes (NCEO) focuses on the inclusion of students with disabilities, including those who are also English learners, in instruction and assessments. The scope of NCEO’s work includes issues related to accessibility of assessments across the comprehensive assessment system including formative assessment practices, classroom-based assessments, diagnostic assessments, interim assessments, and summative assessments.
See our About page for more on NCEO.
Latest News and Publications
This report provides a snapshot of the participation and performance of grade 8 students receiving special education services on statewide reading/language arts and mathematics assessments for 2022-23. Data are presented for both general and alternate assessments (AA-AAAS), including an analysis of the 1% participation cap for alternate assessments using enrollment-based calculations.
A Summary of the Research on the Effects of K–12 Test Accommodations: 2024 (NCEO Report 453)
This report summarizes research on testing accommodations for K–12 students with disabilities from 2024. The data shows a clear move toward qualitative studies of how schools use these tools, and what stakeholders think of them. This review provides key facts for experts who want to improve student support and testing.
NCEO Newsletter: February 2026 issue
This February issue of NCEO’s newsletter focuses on two new resources, a timely past product, and a popular section of our website, NCEO’s State Policies Webpage that is a centralized hub for locating state assessment manuals and other state accessibility information.