This evaluation report on the Effective Teacher Fellowship (ETF) alternative certification program (ACP). This program evaluation compared the State of Texas Assessments of Academic Readiness (STAAR) and Stanford 10 test performance of student samples whose teachers participated in four types of ACPs during the 2012-2013 and 2013-2014 academic years (ETF, university/community college, education service center, and private entity). The analyses of reading and mathematics achievement revealed mixed results, depending on the test and student grade level. However, among the most notable findings: (1) The 2012-2013 ETF ACP cohort outperformed students of teachers in comparison ACP cohorts as well as all Houston Independent School District (HISD) students on the 2013 STAAR 3-8 math tests (Level II phase-in I, percent met Satisfactory standards), while the university/community college ACP cohort and the Education Service Center cohort had the highest percentage of students who met Satisfactory performance standards on the 2013 STAAR 3-8 reading tests; (2) In addition, the 2013-2014 university/community college ACP cohort had the highest percentage of students who met Satisfactory standards on the 2014 STAAR 3-8 reading and math tests; (3) STAAR end-of-course (EOC) reading, writing, and math exam results did not definitively identify a specific ACP type whose students consistently outperformed other ACP cohorts during the 2012-2013 and 2013-2014 academic years; and (4) There was evidence that gaps are being reduced between students of ETF and non-ETF teachers based on value-added data reflecting student growth.