This study was designed to assess factors affecting teacher turnover in government secondaryrnand preparatory schools in Yeka sub city. To examine major reasons for the prevailing highrnteacher turnover and consequences on the quality of education, in the four selected secondaryrnand preparatory schools in the sub city. The study was prompted by the overwhelming teacherrnattrition in the sub city. The study employed descriptive survey, questionnaires, interviews, andrndocument reviews as instruments for data collection. The study conducted on randomly selectedrn150 teachers and 8 principals of the sampled government schools focused on how personal,rninstitutional and community related factors affect teacher turnover and how these implicaterneducation quality. Analysis of the findings of the study indicate more than half of the governmentrnsecondary and preparatory schools teachers leave within the first five years. Findings show thatrnthe institutional factors including poor payment, poor management, poor working conditions,rnstudents’ misbehavior as well as lack of supervision and participatory decision making are thernbiggest factors for teacher attrition. Personal and community related factors like low income,rnlow status of the teaching profession contributed. The recommendation is that all stakeholdersrnmay consider putting educational policies and strategies attracting and retaining teachers inrnplace to ensure better education system and outcomes in the sub city.