There is limited research about the validity and reliability of civic engagement indicators. This study examines the measurement invariance of a Civic Values construct based on students' responses on the 2000 Freshman Survey and 2004 College Senior Survey, which are both part of the Cooperative Institutional Research Program (CIRP). Results show that eight items best estimate Civic Values, and these items are stable across time points. Also, Civic Values are more diffuse during students' freshman year and more correlated during their senior year. Explanations about elements of the collegiate environment that may affect growth on the items that measure Civic Values are also discussed. (Contains 6 tables and 2 footnotes.)