Examines communication about contraception and specific knowledge of oral contraceptives (OCs) in a sample of Norwegian high school students. More females than males discussed contraception at least monthly. Discussions were predominantly held with peers and not adults. Females were far more knowledgeable about OCs than males. The most significant predictors of high knowledge scores were gender and OC use (females). (Contains 23 references and 4 tables.) (GCP)