According to Educational Fundamental Act, 〞Parents have the responsibility to provide guidance to their children during the period of national compulsory education for their children, and have the rights to select the form and content of education and participate in educational affairs of the school for the best wellbeing of their children in accordance with relevant laws and regulations.〞 Yet, in actual practice, although high schools, vocational schools and preschools do not belong to the category of compulsory education, parents' councils are still organized to allow parent involvement in school affairs. By comparing Compulsory Education Act, the Senior High School Act, and Vocational School Law, it is found that regulations about parent involvement in school affairs are not consistent. In terms of the regulations for the constitution of parents' council, only the Senior High School Act meets the format of the principle of rule of law. In contrast, other regulations need further improvements. In addition, individual parent involvement is actually more powerful in the constitution than the collective parent involvement as in the form of parents' councils; yet, it draws less attention in current legal regulations. This is likely to hinder parents' awareness of their rights to get involved in school affairs. As a result, this paper aims at analyzing the regulations related to parent involvement in elementary and middle schools. First it compares individual and collective parent involvement from the perspective of the constitution. It then explores the appropriateness of relevant regulations. It eventually provides suggestions for improving regulations related to parent involvement in school affairs.