So, the concept is alcohol-- alcohol and drugs.
It doesn't matter how cool or uncool, popular not popular your child or teen is, they are going to be tempted.  Some times it's going to come from them.  Some people think, "that only happens to the popular kids" or if your child is really withdrawn, "they must be doing drugs".  No!  Every teen knows where to get whatever it is that they want and if they don't want it, it's still going to be in front of them.  So, it's important that your teen knows what your expectations are.  I'm a firm believer that teens will meet expectations. So, if they know that mom and dad are not cool with drinking and driving, the better chance they won't drink and drive.  If they have the parent that says, "Oh no, our child doesn't do that"-- What does that mean?  You're not with him all the time and teens lie to their the parents, not because they're trying to get away with something but they find out everyone else is lying to their parents so I can't tell my parents everything.  So, you have a conversation.  What happens if that one time-- we're not saying we think that's what you're doing-- we just don't want you out there without a plan.  If you tell you us you've been drinking, mom or dad will come pick you up.  Or, some people have a family friend who lives closer to downtown and has agreed that they will  always pick you up, or they live closer to the school.  Sometimes location is a big deal.  And, I believe in one hall pass. What I mean by that is-- the one time you mess up it doesn't matter where you are, you're intoxicated, your terrified because it hasn't happened before-- you haven't  really talked about it before, and you don't want to get grounded... you have a hall pass.  What I mean by that is, I will pick you up, you will not be grounded, you will not be in trouble, but we'll have talk about it in the morning and what to do the next time this happens.  Some parents freak when they hear me say this-- "I don't want to encourage my child to get drunk".  They're not going to get drunk because of a hall pass, but because they were going to do it anyway and now they have a free pass and guess what mom(?), now you know what they're doing and you have a plan that go along with it.  The other part is, parents feel like they're policing. They don't want to check cell phones, they don't want to look at the internet, they don't want to ask too many questions because they don't want to be a cop to their child.  A big thing I hear is, "I want my  child to have privacy because when I was a kid I hated it when my mom went through my stuff, and I'll never do that to my kids".   Being proactive is not being a policeman.  When you have to police is when you have to put out punishment.  That's not being proactive, that's always afterwards.  So if you think of yourself as having to be a cop-- we don't think of cops as  proactively entering our life, but after there is trouble, after the crime, that's when they enter our lives.  So, you're not policing your child, you're protecting him and being proactive.  Every child will be tempted, it's just how you deal with it.