This study was aimed at to examine the current managerial effectiveness of weredarneducation officers in a decentralized education system in Mejengeir zone of GambellarnRegional state. To achieve this objective, basic questions such as the extent to whichrnwereda education officers are effective in carrying out major managerial functions,rnwhether the existing structure is enabling, the extent to which stakeholders arernsupportive, what major factors do affect effectiveness; and how to improvernperformance to be effective were raised. To this end, descriptive survey method wasrnemployed. The respondents were 17 wereda education officers, 17 principals and vicernprincipals, and 137 teachers selected from 532 population based on random,rnpurposive, and availability sampling techniques. Information was gatheredrnquantitatively through survey questionnaires and qualitatively through interviews,rndocument analysis and observation. 171 copies of questionnaires were filled andrnreturned. Various statistical tools such as percentages, means, T-test and SpearmanrnRank Order correlation Coefficient were used for data analysis. The findings of thernstudy revealed that wereda education officers are incompetent to undertake many ofrnthe managerial functions effectively, the current structure is not enabling, andrnresources and educational in put are lacking. Moreover, the technical and professionalrnsupport of key role players was minimal. This implies that the current performance ofrnwereda education officers was found to be ineffective in attaining the decentralizedrnmanagement of education system. It was recommended that the concerned bodiesrnshould revise the structure that can absorb the required personnel and competentrneducational experts should be recruited based on competency. Moreover, the workingrnenvironment and employee relationship need to be improved and employees shouldrnbe motivated. On top of this, key stakeholders should be able to provide the requiredrnsupport to minimize many of educational problems