This study investigated anxiety symptoms of Japanese adolescents in community high schools. Japanese high school students (N = 1500) from diverse types of schools including general, vocational, and part-time schools completed the Spence Children’s Anxiety Scale (SCAS). First, confirmatory factor analysis supported the 6-factor structure with strong goodness-of-fit indices comparable with the original studies as well as those with Japanese elementary and junior high school students. Girls showed more anxiety symptoms, and items related to worry, insects/spiders phobia, checking, and fear of negative evaluations were the most common symptoms, similar to younger youth. Finally, students who attended part-time high school reported higher anxiety symptoms than those in full-time schools. The utility of the SCAS for assessment of anxiety symptoms in high school students and the need for preventive interventions for students at risk for developing anxiety were discussed.