Primary and Junior High School Act Article 15

The special municipality and county (city) competent authorities, and public universities that offer teacher training programs that organize selection committees in accordance with Paragraphs 2 and 3 of Article 13 shall evaluate the performance of the principals serving at schools, or affiliated experimental primary schools and junior high schools and use the results of the evaluations as the basis for deciding whether or not to continue their appointment.
中文原文 國民教育法第15條
依第十三條第二項、第三項組織遴選會之直轄市、縣(市)主管機關、公立師資培育之大學,應就學校或附設實驗國民小學、國民中學校長辦學績效予以考評,考評結果作為校長應否繼續遴聘之依據。

English translation for reference only; the Chinese text prevails. Not legal advice.