The purpose of this evaluation was to estimate the effect of TFA corps members and TFA alumni on Texas student mathematics and reading scores as measured by the Texas Assessment of Knowledge and Skills (TAKS) exam in Texas in the 2010-11 school year. Using propensity score matching to create comparison groups, comparisons were made on mathematics and reading outcomes between students taught by TFA corps members and novice non-TFA teachers, and students taught by TFA alumni and veteran non-TFA teachers. The effect of TFA on 2010-11 TAKS mathematics scores of elementary and middle grade students was estimated using 493 campuses and 11,788 students and the effect on reading scores was estimated using 483 campuses and 14,354 students. Three positive, substantial statistically significant effects of TFA corps members and alumni on student outcomes were found. The findings and limitations of the evaluation and the methods selected will be discussed.#Cluster,Multi-SiteandMulti-LevelEval #Prek-12EducationalEvaluation #TeachForAmerica #achievement #MultilevelModeling #PropensityScoreMatching #2013Conference