This study aimed to explore the current status of the cultural capital of Penghu's elementary school students as well as how the cultural capital and the academic achievement varied accordingly when some background variables differed, how the cultural capital was related to the academic achievement, and how well the cultural capital would work as a predictor for the academic achievement. Here, the term cultural capital refers to a collection of embodied, objectified, and institutionalized cultural capitals, indicating parents' participation in children's studies, extracurricular reading and artistic cultivation, parents' financial investment in children's scholastic learning materials and accessories, culture-related leisure activities and other learning activities, and parents' educational background, respectively.To test how P. Bourdieu's theory would apply in the realm of local education, a questionnaire was used in this study with the subjects being Penghu's fifth grade students during the 2010~2011 academic year. The findings are as follows:1. No significant difference was revealed between sexes in their academic achievement in social science.2. Different birth order schoolchildren showed a significant difference in their social science study performances.3. Family structure played no role in children's academic performances in social science.4. The higher the parents' occupational level, the greater the children's academic achievement in social science.5. Children with more cultural capital tended to perform better in social science studies.6. Among all forms of cultural capital, institutionalized cultural capital served as the best predictor for schoolchildren's academic achievement in social science.