Does your Indiana school have a written MTSS Math Plan on file? If not — you need one now. House Enrolled Act 1634 (2025) established new legal requirements for mathematics MTSS in Indiana. Every public and charter school serving students in kindergarten through grade 8 must implement universal math screening, tiered intervention, progress monitoring, and family communication — and document all of it in a written plan. This template was built from the ground up using the actual 2025 legislation