At this age, most teenagers would be curious to know more about the opposite sex and will try their best to impress them. Teenagers will learn what happen in a relationship from the drama serial shown on the televison, bear in mind that those drama serial are only acting and are not realistic at all. Therefore when you get into a relationship with the opposite sex and they make you feel uncomfortable by touching various parts of your body, tell him or her or it to stop. And if he or she or it won't stop, fell free to call the cops, tell your parents or beat them up with a weapon. As He or She should only be interested in your heart and not other various part of your body.
When in a relationship withe the opposite sex, u should also be focussing on your studies and not tinking about he or she or it at all times otherwise, u will start to fall behind all your classmates and you will most likely find it hard to catch up and may be retain or streamed to a class you may not like very much.
So the bottomline is not to get involved into a relationship while you are still studying. otherwise you will be distracted and will be unable to focus on your work.Until u feel you are matured enough to get itno a relationship then should you get into one.