PREFACE -- FIGURES -- TABLES -- SUMMARY -- ACKNOWLEDGMENTS -- INTRODUCTION -- METHODS -- FIRST-YEAR RESULTS -- DISCUSSION -- PARTICIPATION AT YEAR 1 SITES -- ITEMS ON TEACHING-PRACTICES SCALES -- FULL REGRESSION MODELS -- DETAILS OF POOLED ANALYSIS OF REGRESSION COEFFICIENTS -- RESULTS FROM ANALYSIS OF FORMAT DIFFERENCES -- SENSITIVITY ANALYSES: USE OF CONTEMPORANEOUS TEST SCORES -- SENSITIVITY ANALYSES: COMBINING REFORM AND TRADITIONAL SCALES IN A SINGLE MODEL -- REFERENCES.