Purpose The purpose of this study was to develop the sport 5C scale of the Korean version. Methods The participants were 772 high school students from 17 to 19 who participated in sport regularly. The validation of Sport K-5C followed a three-step validation procedure through substantive stage, structural stage, and external stage. Results First, In the substantive stage, Sport K-5C consisted of 50 items with 5 factors. Second, in the structural stage, although Sport K-5C was explored as 24 items with 4 factors by EFA, but as a result of CFA, Sport K-5C was confirmed as 24 items with 5 factors. Third, the external stage provided additional validity through correlations of tests with other questionnaires which are similar concept and opposite concept, and group differentiation. Conclusions Sport K-5C is composed of 5 factors and 24 items. The factors are Caring, Character, Confidence, Competence, Connection. This scale can be used to provide an objective evaluation of positive development of youth in sport and physical education context.
