Teacher education was a major concern of the education reform in Taiwan toward the end of the last century. Since then, related teacher education regulations have been headed toward a greater diversity in response to the education reform. Student teaching has been playing a decisive part in teacher education as it requires student teachers to integrate theory with practice. The student teaching system in Taiwan went through several transitions, and currently the term of internship has been minimized from one to half a year. Yet, there are several hidden issues behind the changes. This paper attempts to explore whether a better system exists both to promote the quality of teacher education and to guarantee the rights of the students in teacher education programs. This paper explores the existing problems in the developments and transitions of the student teaching system in Taiwan from a legal perspective. In addition, it also examines internship in other professions, as well as how student teaching is planned and organized in other countries in order to provide suggestions for further improvements of the situations in Taiwan.