Primary and Junior High School Act Article 13

All schools shall appoint a full-time principal who is responsible for the overall management of school affairs.The selection of principals of special municipality and county (city) schools shall be conducted using a publicly open selection process by a selection committee convened by the related special municipality or county (city) competent authority from among candidates who were selected in an open selection process and satisfactorily completed further training, or from among currently serving principals who have nearly completed their term of appointment or who are more than halfway into their second term, and persons who have previously served as principals. After a person has been selected, they shall be appointed to serve as principal by the special municipality or county (city) competent authority. However, special municipalities or counties (cities) with fewer than 15 junior high schools or 40 primary schools under their jurisdiction may appoint a principal currently serving a second term and are not subject to the requirement that the principal has to have completed more than half of their second term. The associated directions governing shall be prescribed by the special municipality or county (city) competent authority.The selection of the principals of experimental primary schools and of junior high schools affiliated with public universities that offer teacher education programs shall be conducted by a selection committee organized by the public universities that offers teacher education programs that the school is affiliated with. Suitably qualified personnel shall be selected to be from among the teachers of the university, and the principal or teachers of its affiliated experimental primary school or junior high school, and/or principals or teachers of other schools. The selected candidate shall then be appointed on a fulltime or adjunct basis by the president of the public university that offers teacher education programs, and a report submitted to the competent authority for future reference.A private school shall convene a principal selection committee to conduct the selection of its school principal; the directions governing the composition and convening of the selection committee, and other related matters shall be prescribed by the board of directors of the private school endowment corporation (hereinafter referred to as the “school legal person”).The selection committee referred to in the preceding paragraph shall select a principal from a list of qualified candidates, using a publicly open selection process.After selecting a suitably qualified private school principal, the board of directors of the school legal person shall submit details of the selected candidate to the special municipality or county (city) competent authority for approval before the person is appointed.Representatives of the parents’ association, and representatives of the teachers’ association, or teacher representatives shall be on the selection committee referred to in Paragraphs 2 and 3. The proportion of each category of representatives on the committee is not permitted to be less than one fifth, and the number of members of any gender is not permitted to constitute less than one third of the total number of committee members. The composition of the selection committee and the operations of the selection committee shall each be prescribed by the special municipality or county (city) competent authority, and by the public university that offers teacher training programs.
中文原文 國民教育法第13條
學校置校長一人,專任,綜理校務。
直轄市、縣(市)立學校校長,由直轄市、縣(市)主管機關召開遴選會,就公開甄選並儲訓合格之人員、任期屆滿或連任任期已達二分之一之現職校長或曾任校長人員中公開遴選,並擇定一人後,由直轄市、縣(市)主管機關聘任之。
但所屬學校數量國民中學未達十五校或國民小學未達四十校者,得遴選連任中之現職校長,不受連任任期應達二分之一之限制;其相關規定,由直轄市、縣(市)主管機關定之。
公立師資培育之大學附設實驗國民小學、國民中學校長,由公立師資培育之大學組織遴選會,就該師資培育之大學、該大學附設之實驗國民小學、國民中學或其他學校校長或教師中遴選合格人員,並擇定一人後,由公立師資培育之大學校長聘兼(任)之,並報主管機關備查。
私立學校校長之遴選,應召開私立學校校長遴選會為之;其遴選會之組成、召開及相關規定,由學校財團法人(以下簡稱學校法人)董事會定之。
前項遴選會應就合格人員以公開方式甄求候選名單。
私立學校校長由學校法人董事會遴選合格人員,報直轄市、縣(市)主管機關核准後聘任之。
第二項及第三項遴選會,應有家長會代表、教師會或教師代表參與,其比例各不得少於五分之一,任一性別委員人數不得少於委員總數三分之一;其組織及運作方式,分別由組織遴選會之直轄市、縣(市)主管機關、公立師資培育之大學定之。

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