A Dissertation Submitted in Partial Fulfillment of the Requirements for the Award of the Degree of Master of Science in Human Resource Management (MSc-HRM) of Mzumbe University Dar es Salaam Campus College.This study aiming at assessing the factors that affects employee performance in the education sector. Purposively the study selected Pugu Secondary School, one of the longest government schools and its experience will be more useful to the findings of the study. The study both use qualitative and quantitative approach. The data were collected through interviews, observation and questionnaires and analyzed using the aid of SPSS version 11. The study found that lack of funds affects greatly affected assessment of employee performance in education sector. The findings also revealed that poor reward and recognition was the critical factor that reduces the atmosphere of cooperation during of assessment. It was also found that failure to adhere organization mission and vision has great impact to the implementation of assessment process that has to be done. Nevertheless, the findings found that there were no comprehensive plans made by the institution to improve the assessment of the employee performance From these findings, it was recommended that government as well as the ministry of education to adhere to the mission and vision which will direct what is needed to be done. The study also recommends that funds must be given to facilitate an enabling the process of employee performance to be done accordingly.