The 13 IDEA disability categories with plain-language definitions, 2024-25 shares of students, developmental delay, the two-prong test and state names.
What the least restrictive environment requires, how IEP teams decide placement, the continuum, 2024-25 LRE data and Texas instructional setting codes.
Download the OSPI procedural safeguards notice and see when Washington districts must give it, what changes in November 2026 and how disputes are resolved.