The need for comprehensive sexuality education in schools has become essential in today’s society, yet it remains a contentious issue due to socio-cultural, religious, and political factors. This study examines the attitudes of Christians and Muslims towards sexuality education in Nigerian schools. Despite the significance of sex in human life, there is a lack of scientific knowledge imparted by parents, elders, and teachers in India and Nigeria. The study highlights the challenges faced by adolescents in accessing accurate information about sex, resulting in misconceptions and health risks such as STIs and early pregnancy. Objectives include assessing adolescent knowledge about sex education, the impact of parents’ religious backgrounds on their objections, identifying risks associated with adolescent sexual activity, and examining adolescents’ attitudes towards sex education. Findings will provide empirical evidence to inform schools, parents, and policymakers about the importance of sex education and offer a reference for future research. The study is limited to Kaduna State, Nigeria, and aims to contribute to the broader discourse on sexuality education in conservative societies.