Explores the kinds of strategies adolescents deploy in achievement context in an unselected sample of Swedish adolescents. Six groups of adolescents were identified according to the strategies they deployed. Results showed that membership in the functional strategy groups, such as in mastery-oriented and defensive pessimist groups, was associated with well-being, school adjustment and achievement, and low levels of norm-breaking behavior. (Contains 48 references and 3 tables.) (GCP)