This report presents findings from a NASA requested evaluation in 2008, which contains both implementation and impact modules. The implementation study investigated how sites implement Science, Engineering, Mathematics, and Aerospace Academy (SEMAA) and the contextual factors important in this implementation. The implementation study used data from extant sources and interviews with the 14 currently open sites and with 6 of the 11 closed sites. The impact study investigated the short-term outcomes of SEMAA for students and parents. The impact study was designed as a randomized control trial of students in 4th through 8th grades (and their parents or caregivers), and involved six SEMAA sites. Surveys were administered to students and parents in both the treatment group and control group at baseline (at the time that individuals applied for the Fall 2009 SEMAA session) and follow-up (after the Fall 2009 SEMAA had been completed). At baseline, the study found high levels of interest and engagement with STEM among students and parents who applied to the Saturday SEMAA program. Included in the report are: Appendix A: Methodological Details and Appendix B: Instruments.