ACKNOWLEDGMENTS I would like to thank the folks at the Florida Department of Education who were very helpful in securing data for me. I received assistance from numerous people across several organizations, but I would like to thank a few by name: John Watson, Ruth Jones, Gene Tanner, Martha Miller, and Ed Croft. I would also like to thank the California CSR evaluation team who all have been very helpful. As the RAND leader of the California CSR Evaluation Brian Stecher has provided both support and some great ideas. Cassie Guarino, Marion Eaton and Roger Levin all made invaluable contributions in preparing parts of the data used in this analysis. Those who read drafts of my work improved it greatly, and hold no responsibility for its shortcomings: Michele Welsing and Amy Childs. I would like to thank my outside reader Larry Picus, and my committee: Dominic J. Brewer, Al Williams and Robert Lempert. Finally I would like to thank all of my teachers, both in school and out of school who have made my life rich and interesting. ix