Recent studies on the validity of the Self Description Questionnaire II (SDQII) have shown a distinction between academic and nonacademic facets of self-concept. Most of these studies have focused on the academic facets than the nonacademic facets. For the academic self-concept constructs, the application of advanced confirmatory factor analysis (CFA) has provided particularly strong tests of construct validity. By correlating external criterion variables such as achievement scores and subject selection in specific academic facets to self-concept in corresponding academic facets, the distinctiveness of the self-concept constructs can be more clearly shown. However, few studies have applied a similar approach to testing the validity of nonacademic facets of the SDQII instrument. The present study examined the responses of high school students (N=244) in four nonacademic facets of the SDQII: Same-sex relation, Opposite-sex relation, Parent relation and Honesty-Trustworthiness. CFA found the four distinct factors. When nonacademic external criteria including perceived support from family, perceived support from friends and adoption of avoidance coping strategies were added to the CFA model, the distinctiveness of these four self-concept constructs is clearly demonstrated. Perceived support from family was correlated more highly with Parent relation than with other SDQII factors, perceived support from friends was correlated more highly with Same-sex relation and Opposite-sex relation than with other SDQII factors, whereas adoption of avoidance strategies was correlated more negatively with Honesty-Trustworthiness than with SDQII factors. The inclusion of these nonacademic external criteria has provided a strong evidence of the validity of these four nonacademic scales.