​The 21st Century Community Learning Centers program puts forth sound principles of effectiveness to guide current subgrantees in identifying and implementing programs and activities that can directly enhance student learning. All subgrantees must assess progress towards achieving the proposed objectives and ultimate goal of providing high-quality opportunities for academic enrichment and student success. The evaluation must be 1) used to refine, improve, and strengthen the program (continuous improvement of the program); and 2) made available to the public upon request. ​