I think being at home when you have teens is the best thing you can do to keep them (and their friends!) out of trouble. I had to work when my children were teens due to financial necessity, but while I was off working (and I was home by 5:30 or 6:00 pm) my older son got involved with teens who got involved in the drug scene. I tried to check up on him in the evening, but by then he and his friends had alredy partied after school at someone else's home.
I think the best thing you can do is stay home and invite your teen's friends to hang out in the living room, playing music or video games, and doing homework together. The teen years are precisely when a LOT of teens go out of their way to experiment with drugs, premarital sex, shoplifting, etc. You'd be surprised at the number of really good kids that experiment. You've got my vote to stay at home!! When people ask what you are doing, you can say, I'm providing a safe environment for my teen to socialise with other teens-including your teen!

Linda Yanez