If you are truly concerned about the youth of America, and if you have the time and ability, I encourage you to volunteer in your church religious education program, your State or County Child Advocacy program, or even consider foster parenting.
These things sometimes are discouraging, because often those in charge are full of the moral relativism and new-age psycho-babble the Pope decries. However, don’t be discouraged. Your presence can make a difference. A child may simply be impressed by how you conduct yourself at Mass or live your life, and it might influence him/her to seek Christ later on, if it’s not possible now.
I have done volunteer work, and that’s why I advocate this as a way to help. If you can not worry about “changing the system” (which may be corrupt, whichever one you’re in), and focus just on your work, your child, you will find it rewarding. I feel teenagers are especially in need of good role models, and understanding the benefits, physically and spiritually, of chastity.