This report marks the eighth analysis conducted by the National Center on Educational Outcomes (NCEO) of the public reporting of state assessment results for students with disabilities. This is the third analysis that NCEO has conducted since the passage of the federal No Child Left Behind Act (NCLB). Overall, a total of 48 states reported some state-level information about students with disabilities on their state assessments: 35 reported participation and performance for all their general assessments, 11 reported participation and performance data for some of these, 2 reported only performance information, and 2 did not report information. When considering only tests that were part of NCLB accountability systems, more states reported all information publicly: 44 states reported participation and performance information for all these assessments, 2 reported participation and performance information for some of these assessments, 2 reported only performance information for all these assessments, and 2 did not report information. Overall, this report reinforces what was found for the 2002-2003 school year data. States are improving their public reporting practices, but the improvement is gradual. These improvements include more states reporting test information for accountability tests and an increase in information provided on alternate assessments. However, there are still improvements that need to be made. This report discusses the results of the study and provides recommendations for how states can continue to improve their public reporting practices. The following are appended: (1) Verification Letter to State Assessment Director; (2) Letters to State Directors of Special Education; (3) 2003-2004 State Assessment Systems and Status of Disaggregated Data; (4) Disaggregated Participation Information (Given for State-Level Data); (5) Participation Rate Analyses; (6) Disaggregated Alternate Assessment Participation Information (Given for State-Level Data); (7) 2003-2004 Alternate Assessments; (8) Participation and Performance for Students Tested with Accommodations; and (9) Performance Data for Reading and Math Assessments. (Contains 26 figures and 2 tables.)