The Act of the Establishment of Juvenile Reformatory Schools and Enforcement of Education Article 53

Each class of a Reformatory School shall not have more than twenty-five (25) Students. If a class only has few Students, the multiple teaching may be enforced.Male and Female Students shall be administered separately. However, they may join in the same class for education.
中文原文 少年矯正學校設置及教育實施通則第53條
矯正學校每班學生人數不超過二十五人。
但一班之人數過少,得行複式教學。
男女學生應分別管理。
但教學時得合班授課。

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