High rates of attrition make it challenging for schools to provide qualified special education teachers for students with disabilities, especially given chronic teacher shortages. We synthesize 30 studies from 2002 to 2017, examining factors associated with special educator attrition and retention, including (a) teacher preparation and qualifications, (b) school characteristics, (c) working conditions, and (d) teacher demographic and nonwork factors. Most studies examined working conditions (e.g., demands, administrative and collegial supports, resources, compensation) among special educators who left teaching, moved to other positions, transferred to general education teaching, or indicated that they intended to stay or leave. The majority of researchers used quantitative methods to analyze national, state, or other survey data, while eight used qualitative methods. Our critique identifies both strengths and weaknesses of this literature, suggests research priorities, and outlines specific implications for policy makers and leaders.