As part of Niko-Niko Room's educational support program, university students' abilities to practice educational support are formed, and educational support for school children is offered. In this study, factor structures of the perceptions of this program's effects were investigated. Data of university students, school children, and guardians who participated in the programs held in the first and the second semesters of 2008, and the first semester of 2009 were used in the analysis. For university students, factor analysis of items measuring ability formations, educational behaviors, degrees of satisfactions, and degrees of interests of children were conducted. For school children, factor analysis of items measuring self-efficacy, sense of learning, ability formations of university students, degrees of satisfactions, and degrees of interests were conducted. For guardians, factor analysis of items measuring ability formations of university students, educational behaviors of university students, degrees of satisfactions, and degrees of interests of children were conducted. Ability formations of university students consisted of five factors, educational behaviors of university students consisted of two factors, ability formations of university students perceived by school children consisted of two factors, degrees of satisfactions of guardians consisted of two factors, and the remaining consisted of one factor each.