This programme is included in the Source Book of HIV/AIDS Prevention Program that presents 13 cases studies of good and promising practices of HIV/AIDS prevention programs in Sub-Saharan Africa. Students Partnership Worldwide (SPW) is a non-profit NGO whose aim is to make young people central to the development process. SPW Tanzania advocates that young people have much to offer, and their age can be an advantage when discussing sensitive issues. SPW trains and deploys 18-25 year old Tanzanians and Europeans as peer educators in the frontline of a school-based campaign to mobilize young people against HIV/AIDS. The peer educators use participatory activities in both the classroom and extracurricular activities to educate students in adolescent sexual and reproductive health (ASRH). They also work toward facilitating easier access to youth-friendly services, both within and outside the school. The program consists of three main components namely: classroom activities, extracurricular activities and festivals. The primary target group is secondary school students (Forms 1-4, ages 13 to 20 years), the secondary target groups are the primary school pupils (Standards 5-7, ages 11 to 15 years), out of school youth (ages 10 to 24 years) and the community at large (all ages).