Act Governing the Appointment of Educators Article 37

The first and second term of teachers of junior colleges and higher levels shall be one year, but the later renewed terms shall be two years.The first term of high school teachers shall be one year, but the later renewed terms shall be two years.
中文原文 教育人員任用條例第37條
專科以上學校教師之聘期,初聘為一年,續聘第一次為一年,以後續聘,每次均為二年。
中等學校教師之聘期,初聘為一年,以後續聘,每次均為二年。

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