This 23rd annual report to Congress on the implementation of the Individuals with Disabilities Education Act 1997 (IDEA) discusses the progress of students with disabilities. It includes a number of modules reporting on the results of the National Assessment. Section 1 includes five modules that present statereported data on high school gradation rates for students with disabilities, information about the participation and performance of students with disabilities in state assessments, challenges to providing secondary education and strategies, outcomes for students with problem behaviors, and data from the National Early Intervention Longitudinal Study. Section 2 contains information on the characteristics of students receiving services under IDEA. The five modules in Section 3 examine some of the programs and services available within schools for children with disabilities and include preliminary results from the National Assessment Program. Educational environments, family involvement, personnel needs, early intervention services, and state and local implementation are discussed. The final section contains three modules describing state improvement activities, the planning process used to develop the Part D National Activities Program, and the National Assessment Program. Extensive appendices provide data tables on child count, placement, personnel, graduation rates, discipline, population and enrollment, and early intervention. (Sections contain references.) (CR)