The Effectiveness of "Teach for America" and Other Under-certified Teachers
Certified teachers in this study were from accredited universities and all met state requirements for receiving the regular initial certificate to teach. Recently hired under-certified and certified teachers (N=293) from five low-income school districts were matched on a number of variables, resulting in 109 pairs of teachers whose students all took the mandated state achievement test. Results indicate 1) that students of TFA teachers did not perform significantly different from students of other under-certified teachers, and 2) that students of certified teachers out-performed students of teachers who were under-certified. This was true on all three subtests of the SAT 9�reading, mathematics and language arts. Effect sizes favoring the students of certified teachers were substantial. In reading, mathematics, and language, the students of certified teachers outperformed students of under-certified teachers, including the students of the TFA teachers, by about 2 months on a grade equivalent scale. Students of under-certified teachers make about 20% less academic growth per year than do students of teachers with regular certification.