Performance & development
A core role of a Principal is to ensure high morale throughout the school. The three aspects of high morale are senses of influence, affiliation and achievement.
Each of these is important to implementing the efficacy & development program. The most effective way is to allow employees significant control over their appraisal and improvement targets.
The purpose of an appraisal process is to improve efficacy. The following link leads to documents to guide the efficacy & development process.