HB 221 amends the Texas Education Code to eliminate specific state-required assessment instruments that exceed federal requirements. Specifically, HB 221 removes mandatory state testing in social studies for grade 8 and certain end-of-course (EOC) assessments in high school, including English I, English II, Algebra I, and U.S. history, unless required by federal law. The bill allows the State Board of Education to reduce assessments if federal changes to testing mandates occur in the future. The legislation is set to take effect in the 2025–2026 school year​.