Parents need to talk with you and be more supportive. They shouldn't yell or anything, but they should help kids understand it's not a good thing in the first place. Kids understand that, if you get caught, there will be consequences. Usually it's the seventh or eighth grade. If you're busy, it may be later and happen less often.
Sports takes up a lot of time.
Most don't worry until they caught. Most worry about the police because their parents already know. In sports, athletes worry about letting teammates down. The risk of drinking and getting caught is gambling away the season. Drinking is not a major concern.