“…The effect of underprepared teachers on student achievement is unknown. Given the lack of evidence that ABE leads to signifi cant increases in adults' literacy skills (Beder, 1999;Friedlander & Martinson, 1996;Sheehan-Holt & Smith, 2000), adult educators must recognize the problems inherent in the present system of teacher training. Of course, there are many infl uences on student learning, as has been shown in the K-12 student achievement literature (e.g., class size, socioeconomic status, school resources, culture, and leadership, and teachers' working conditions).…”