The purpose of this preliminary study was to identify small informal groups of teenage American Indian boys at a Bureau of Indian Affairs boarding school, in order to help determine if the school's declared objective of cultural integration were being met. The sociometric instrument chosen was disguised as a civil defense planning questionnaire and administered to 350 Indian high school boys living in 1 dormitory. Results indicated a possible inverse relationship between degree of acculturation and tribal identity, as manifested by intragroup associations. A tentative conclusion was that there might be an indirect relationship between acculturation (as measured by the degree of intertribal friendship choices) and geographical isolation of the students' homes. The appendix in the document contains the Disaster Emergency Planning Questionnaire. (JAM)