Abstract
The purpose of this study is to clarify the significance and structure of learning at professional schools for teacher education in the lifelong development of teachers. We conducted interview surveys for 10 teachers who had graduated from professional schools for teacher education. As a result of analysis using M-GTA, 31 concepts,13 categories, and 1 core category were extracted. It was found that it is important for teachers-as-students in professional schools for teacher education, who are often mid-career, to change their attitude toward learning so that they can learn to be creative in a reflective and inquisitive way, from the standpoint of learners, which is often different from their previous approaches. In addition, we were able to clarify the structure of learning that teachers-as-students in professional schools for teacher education felt was important for changing their attitude toward learning, to such reflective and inquisitive learning.