Education: school districts; letter grade system for ranking public schools; provide for. Amends 1976 PA 451 (MCL 380.1 - 380.1852) by adding sec. 1280h.

HB 4970 establishes a letter grading system (A-F) for all Michigan public schools starting in the 2026-2027 school year. It requires the state to assign grades based on five specific metrics: student proficiency in math and English language arts, student growth in those subjects, progress for English language learners, high school graduation rates, and how schools compare to others serving similar student populations. The grades will be updated annually using existing state assessments and growth models, without changing current testing requirements. This policy directly affects every public school in Michigan by making annual performance data publicly available through standardized letter grades.