No references to work done attached ABSTRACT This study was carried out to investigate utilization of contraception and sexual behaviour of adolescents in Senior Secondary School, Rumuolumeni, Port-Harcourt, Rivers State. Total sampling was adopted. An adopted structured anonymous closed and open-ended questionnaire was used for data collection. The data was analysed using inferential statistics, one-way ANOVA at 0.05 significant level and descriptive statistics. Ten point seven percent (...