I had all kinds of friends growing up, but the ones I spent time with outside of school were the ones who stood up for my beliefs. My friend rented a Rated R movie one time and my friend Jessica said, "She can't watch that! Take it back!" I think a few of them amongst themselves would drink sometimes, but they never invited me or told me about it because they thought it would bother me. They also never talked about how far they had taken things with their boyfriends or girlfriends, but I think they weren't the type to kiss and tell anyway. I'm seeing my best friends from highschool tomorrow!
I graduated over 10 years ago and we still get together. It's been so fun watching each other grow into careers, marriage, motherhood, etc.
I suggest inviting your friends to do something good with you.
Be a leader, not a follower.