This article explains how the authors are able to take results from a regular program of course-level assessment, use them to inform curricular changes, and then measure the learning in those revised courses to determine whether and which changes made a difference. The authors discuss why it was important for Kaplan University to implement course-level assessment, how they designed their assessment program so that they would be able to close the loop, how it works inside and outside of the classroom, the impact of using this process, and what they have learned. (Contains 3 charts, 1 table and 6 resources.)