This paper is a brief report on assessment of personnel performance evaluation system that provides data-driven suggestions for improvement. It sought to determine whether the current system adheres with or observes generally accepted principles using the Personnel Evaluation Standards (PES). It also determined the issues and concerns from the perspectives of the personnel themselves and got their recommendations as to how the system can be improved. Results reveal that the personnel evaluation system is adherent to the generally accepted principles in personnel performance evaluation. However, there is a need to address deficiencies which can be done through the development of an evaluation manual. It is important that the school must consider the participation of all sectors in the process. In such a way the sense of ownership can be developed. Limitations in the current personnel evaluation systems must be kept in mind as future improvements and changes are made. Results can be used as guide in the design of a new approach to personnel evaluation for the institution. Moreover, it also describes an experience of evaluation that could be useful to investigators elsewhere.