The Strengthening Civics Education Act authorizes the Secretary of Education to award grants to schools and school districts to support civics and history education programs that help students understand American government and democratic participation. The bill also requires the National Assessment of Educational Progress to conduct biennial assessments of student achievement in civics and history for grades 4, 8, and 12, with results disaggregated by state to measure proficiency levels. Additionally, the legislation expands an existing higher education program to support civics and history teacher training, curriculum development, and partnerships between colleges and nonprofits, while establishing a federal website to catalog civics-related scholarships and fellowships. The bill includes a clear rule stating that nothing in it overrides state and local control over educational content and curriculum decisions. The legislation takes effect one year after enactment for the new clearinghouse website and reauthorizes federal funding through 2027.