A bill for an act relating to social studies instruction, including instruction in United States government, provided to students enrolled in grades nine through twelve, and including applicability provisions.

HF 520 increases Iowa's required social studies curriculum for grades 9-12 by mandating one full unit of United States government instruction (up from one-half unit), replacing the current standard. It requires all students in public school districts, accredited nonpublic schools, charter schools, and innovation zone schools to complete this instruction, which must cover voting procedures, the U.S. Constitution and Bill of Rights, and civics. The bill also specifies that U.S. government instruction must include an assessment of students' knowledge of the Constitution and Bill of Rights. This requirement applies to all affected schools starting with the 2026-2027 school year.