I'm all for open and honest communication. My girls are 13 and 15 and they know that their freedom is directly linked to the amount of talking they do. When they are generally open with me about the what is going on with them, I feel confident that they will come to me with issues and feel able to give them more freedoms. They both come home from school with stories about their day (the good, the bad, and the really ugly!). Just last night my younger daughter went to a school dance. Here is what she had to report (names changed):
Tom and Mary and I had a great time watching everyone dance. 'Did you dance?' I asked. No, mostly everyone is in a big line grinding each other, and I'm not really into that. Michelle asked me to join them, but I said having dance sex with other girls didn't look like fun. Tommy, Mary and I had fun goofing off and doing a little salsa off to the side.
This was all in response to my asking 'did you have fun?' No prodding or third degree, just an example of open communication that is normal in our home. It was everything I could do not to comment on the 'dance sex' comment, but by resisting the urge to turn that into a 'teachable moment', it kept the conversation light. Besides, her response to the what the other girls were doing tells me she is plenty sensible about it.
I also wanted to point out that being friends with your kids freind's parents, and their teachers, etc. is a great way to stay in the loop. My older daughter has a friend that has made some pretty poor choices lately. She has made some vague comments to me about it ' Bob is being such an idiot!' 'I'm not sure how much longer I can take Bob.', but I didn't push to know what Bob was up. Her reaction to his choices was enough to let me know that she wouldn't be joining in his shenanigans and that was enough for me. A couple of weeks ago I found out through another friends parent that Bob has been drinking. The next time my older daughter made a negative Bob comment, I said 'Well, drinking is known to cause stupidity.' 'How'd you know??', she asked. Well I know everything! That led to a long conversation which she instigated, about how to handle the situation.
All this to say, I think open and continuous communication with your kids, their friends, friend's parents, teachers, coaches, etc. is key. That, and clear expectations for behavior and consistent consequences for not living up to those expectations will go a long way to raising sensible kids.
Side note: My eldest is grounded, no tv/phone/computer + extra chores, this weekend for breaking curfew Thursday evening. There was no yelling, stomping off, or slamming doors since she knows from experience that those behaviors only extend the consequences. She did walk off clearly angry and didn't come back out for the usual goodnight kisses before bed, but yesterday morning she was ready to talk. She said she was sorry to have broken curfew and we had a good conversation about what happened and what she could have done differently (called when friend's dad was late picking up). I reiterated why we have the rules we have, and that staying out late without calling to check in is disrespectful to those who love you. I also pointed out again that her daddy and I always call to check in, if we are running late, so that no one is left worrying. It is a matter of basic manners that everyone must learn. Mom - 1 Teen - 1 Win/win