“…2 Across all but one of these studies (Noell & Gansle, 2009), TFA teachers outperformed novice teachers, and in some they also outperformed veteran teachers. TFA teachers also outperform new teachers from selective undergraduate teacher preparation programs and teachers from other selective alternative preparation programs, particularly in STEM subjects and secondary grades, but they left the classroom at higher rates than both alternatively and traditionally certified teachers (Boyd, Dunlop, et al, 2012; Boyd, Grossman, et al, 2012; Clark et al, 2013; Henry, Bastian, et al, 2014; Henry, Purtell, et al, 2014). Recent evidence also suggests that there are no spillover effects of TFA on student learning into non-TFA classrooms (Hansen, Backes, Brady, & Xu, 2014).…”