Sule Muhammad and Sheu Adaramaja Lukman 2026. Validity and Reliability of Civic Education Achievement Tests Among Senior Secondary School Students in Gusau Local Government Area, Zamfara State. Amandemen: Journal of Learning, Teaching and Educational Studies. 4, 1 (Apr. 2026), 9–22. DOI:https://doi.org/10.61166/amd.v4i1.109.