Sets mandatory federal funding levels for the Individuals with Disabilities Education Act (IDEA) for fiscal years 2026 through 2035 and for each year after 2035. For each year it specifies an authorized dollar amount (with an alternate percentage-based option tied to a formula) and a matching appropriated dollar amount (also with an alternate percentage). The provision also explains how the formula amount is calculated (number of children with disabilities served × national average per‑pupil expenditure) and states when appropriated funds become available and how long they remain available for obligation.