My guess, but it’s only that, is that they are more the same than different in terms of participation. But the attitudes around it may differ (as in how they feel about their own choices and peer pressure. )
I know that years ago, I had the opportunity to see several on drug use. They all had roughly the same % reporting trying/having used and the non-users all vastly overestimated the number in the trying/having used group. The group included public schools as well.