The ma in objective of this study was to inves tigate th e factors influencing the effectivernimple ment a ti on of CPO Program in Addis Ababa city administration. To accomplish thi s purpose. arndescriptive Survey method was e mployed. Da ta for th e study were coll ec ted using Qu es tionna ires.rninterview and document analysis. By Purposive sampling method from Addis Abab a c ityrnadministration, Abiyot Kirs. Oerartu Tullu and Lafto secondary sc hools were se lected as a sample.rnIn the study 109 Teac hers participated on filing th e questionnaires and 1 5 Teachers havernParticipated on interview in number 6 teac hers. 3 Unit leaders . 3 direc tors. 3 sub city EducationalrnExperts have Participated on a n interview and document analysis is also took place in se lectedrnsc hools a nd portfolio of six te ac her. two teachers from each school have been seen. Data ob ta in edrnthrough ques tionnaires were qua litati ve ly described and interpre ted a nd co mbin ed with therninformation ob ta in ed throug h interview were qualitatively described in to supplement th ernqu antitat iv e d ata. Th e res ult of da ta a na lysis a nd interpreta ti on indi cated tha t the su pport given tornteachers both pre-services a nd post practice was low. the supports provided for teachers after. th eyrnstarted teaching and follow up-sys tem was also very poor it was consid ered the only responsibilityrnof the sub ci ty T OP expertis e and supervisors . the attitude of teac hers towa rds th e CPO programrnwas found n ega tive. and the idea of the teac hers a nd direc tors shows contradiction on CPOrnac tivities. On the bases of these major findings conclusions were made in c hapt e r fiv e. Fin a ll yrnrecommendations were suggested.