With funding from the Bill and Melinda Gates Foundation, CRESST conducted a multi-year evaluation of a major school reform project at Alain Leroy Locke High School, historically one of California's lowest performing secondary schools. Beginning in 2007, Locke High School transitioned into a set of smaller, Green Dot Charter High Schools, subsequently referred to as Green Dot Locke (GDL) in this report. Based on 9th grade students who entered GDL in 2007 and 2008 respectively, CRESST used a range of student outcomes to monitor progress of the GDL transformation. The CRESST evaluation, employing a strong quasi-experimental design with propensity score matching, found statistically significant, positive effects for the GDL transformation including improved achievement, school persistence, and completion of college preparatory courses. Appended are: (1) Demographic Characteristics and Achievement of the Freshmen at GDL and LAUSD; (2) Cohort Specific Descriptives; and (3) General Descriptives. (Contains 17 figures, 43 tables and 6 footnotes.)