Regardless of the importance of youth in socio-economic development around the globe, adolescents aged between 10 and 19 years face problems ranging from their basic to Sexual and Reproductive Health economic needs (SRH). This study determined baseline parent-adolescent communication about SRH from a randomized controlled trial of integrated reproductive health materials in a Problem-Based Pedagogy (PBP) for shaping safe sexual behavior among adolescents in Tanzania. The study employed a baseline cross-section survey from a randomized controlled trial of integrated reproductive health materials in a problem-based learning pedagogy for shaping safe sexual behavior among 647 randomly selected adolescents in Tanzanian ordinary-level secondary schools. The response rate of the study was 100% of which 57.5% were females. Totalities of 73.3% of adolescents reported having never communicated with their parents about SRH. Parent-adolescent communication about SRH matters was found to be low and thus, recommends collaborative parent-adolescent interventions to address it accordingly.