USA: „Attrition from the profession currently accounts for about 90 % of the annual demand for teachers, and is about double the teacher leaving rates of countries like Canada, Finland, and Singapore. […] More than two-thirds of teachers leave for reasons other than retirement, most of them citing dissatisfaction with different aspects of teaching that are amenable to policy intervention, including accountability policies, lack of administrative support, and lack of opportunity for decision making input and collaboration.“
Univ.-Prof. Dr. Linda Darling-Hammond u. a., Breaking the cycle of teacher shortages: What kind of policies can make a difference? In: Education Policy Analysis Archives Vol. 27 No. 34 (2019), S. 7.