The Enforcement Rules of the Education Act for Indigenous Peoples Article 4

Any competent education authority in charge of schools at senior secondary level and below shall determine that a school is an indigenous key school as defined in the Act, Article 4, Paragraph 1, Subparagraph 5, in accordance with the following provisions:1.The school is located in an indigenous peoples’ area and indigenous students account for at least one-third of the total number of its students.2.The school is not located in an indigenous peoples’ area but it has at least one hundred (100) indigenous students, or indigenous students account for at least one-third of the total number of its students.The determination referred to in the previous paragraph shall be undertaken anew every three (3) academic years.
中文原文 原住民族教育法施行細則第4條
本法第四條第一項第五款所定原住民重點學校,由高級中等以下學校各該教育主管機關,依下列規定認定之:
一、在原住民族地區,該校原住民學生人數達學生總數三分之一以上者。
二、在非原住民族地區,該校原住民學生人數達一百人以上或達學生總數三分之一以上者。
前項認定,應每三學年重新認定一次。

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