Sometimes it's not that your parents don't trust you, it's a concern of your parents when a group of teens get together.  Sometimes teens make poor choices when they are in a group setting.  Teens have a tremendous amount of peer pressure and that's where things can go wrong.  I bet your parents only want the best for you and they know how quickly things can happen.  You may want to try to build up some trust with your friends AND your parents.  Make sure your parents have an opportunity to meet your friends and get to know them.  I know many of my teens friends and I know what friends are responsible and which ones are not.  Hope this helps!

I know what you are saying. sometimes they base your behavior on what they did as a teen. They base that on what they see other teens doing.

I feel your pain, edison12345. This reminds me of a situation I got into when I was 13-going-on-14...I wanted to go to a music festival in the city with my friends. When I asked my parents, they said "No way". I threw a big fit, because I, personally, felt mature enough to go even if my friends weren't, and was appalled that they couldn't see how grown-up I was for my age.
Looking back, I've realized it wasn't ME they were concerned about, it was the world around me and my friends. I was mature for my age, but not mature enough to know what to do if we had gotten into a bad situation. This was before cell phones; I couldn't just call dad to come pick us up if we got lost!
Anyway, what I'm trying to say is I know how it feels to be that age, and to feel like you could take over the world if it wasn't for those pesky parents! My only advice to you is to stick it out, and continue to show them that you are responsible and mature. I'm not saying you should bow to their every will -- sometimes you have to stand up for what you believe in, and fighting with you parents isn't a bad thing, just a side effect of growing up and forming your own ideas and opinions. Even if you butt heads with your parents every now and then, you can still choose to carry yourself with good nature and level-headedness overall. You might even find yourself the recipient of some unexpected surprises for doing so (a present for a good report card, verbal praise for ignoring a bully...my mom once bought me a CD that I wanted because I chose not to skip school with my friends!) Parents can be a bummer, but rest assured that it will blow over in a few years, and all will be forgiven in the long run!