Private School Act Enforcement Rules Article 21

At the expiration of the one-year period during which an interim director exercises the powers of the board as prescribed in Article 25, Paragraph 4 of the Act, the corporate body's competent authority may, before the expiration date, petition the court to grant an extension when it considers this necessary; each such extension shall be for one year, and the cumulative length of extensions may not exceed four years.If the court suspends or terminates the chairman's performance of his duties pursuant to Article 25, Paragraphs 1 and 5 of the Act, the board shall appoint one director to act on behalf of the chairperson. The same shall apply if the chairperson's performance of his/her duties automatically ceases as prescribed in Article 24, Paragraph 3 of the Act.
中文原文 私立學校法施行細則第21條
臨時董事依本法第二十五條第四項規定代行董事會職權一年期限屆滿,法人主管機關認為必要時,得於期限屆滿前聲請法院延長,每次一年,總計不得超過四年。
法院依本法第二十五條第一項及第五項規定停止或解除董事長職務時,由董事會推選董事一人代理董事長之職務。
董事長依本法第二十四條第三項規定當然停止職務時,亦同。

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