The National Campaign has done loads of research about teens, sex, and teen pregnancy. Right now, there are quite a few downloadable infographics full of interesting stats. (How faith affects teen pregnancy rates, for example.) While not all might apply to your work in YoungLives, there is some interesting studies and results! You might find this helpful in raising community awareness and training volunteers.
Remember, this isn't YoungLives specific material. Use what you think might be helpful. Have questions? Contact your Regional or Divisional Coordinator for more guidance. The YL Service Center has some great materials that ARE YoungLives specific. You can order them through the staff site. (Make sure to check out the YLVS Case Statement. This is a great resource and tool for approaching potential donors and volunteers!)