The study focused on investigating quality of education in secondary schools in Addis Ababarnparticularly in in Bole sub-city. A case study of Bole sub-city secondary schools was exploredrnusing a sample of 365 respondents selected through simple random technique. Data wererngathered by a combination of qualitative and quantitative methods defined as triangulation. Self-rnadministered questionnaires for principals, teachers, and pupils and interviews for principals,rnteachers and supervisor was also the instruments employed for data collection. Analysis of therndata was done using descriptive statistics. Findings were that quality of education was affectedrnby inadequate supporting inputs and facilities, inappropriate teaching methods and unmotivatedrnteachers. Finally, the researcher based on the finding recommended that strong collaborationrnamong stakeholders is one of important tools to insure quality of education in Bole sub city.