The goal of the report is to provide useful information to Indiana policymakers as they debate the merits of full versus half day programs. This report sought to answer three questions: (1) What does the national research say about the effectiveness of full day kindergarten; (2) What does the Indiana data say about full day kindergarten; and (3) How is time used within full day kindergarten programs? Finally, the report concludes with a series of recommendations regarding Indiana policy on full day kindergarten. [This report was prepared by the Center for Evaluation and Education Policy, Indiana University (formerly the Indiana Education Policy Center) for the Indiana Association of Public School Superintendents.]