“…Moreover, high rates of attrition of teachers in their first five years of teaching (Darling-Hammond, 1997;Ingersoll, 2003;Kados & Johnson, 2007;Burghes et al, 2009;Shen and Palmer, 2009;OECD, 2005 and remain a persistent teacher retention problem. Although some studies show that on average, early career leavers tend to be less effective than stayers as measured by the test score gains of the students in their classrooms (Henry et al, 2011;Goldhaber et al, 2011;Boyd et al, in press), others suggest that teachers with stronger qualifications and more competitive university backgrounds are more likely to exit early (Lankford et al, 2002;Boyed et al, 2005;Guarino et al, 2006;Feng and Sass, 2011).…”