I believe that they're allowed their "oat sowing" and either return to the flock or remain with the heathens, aka...the rest of us!
Kind of a "coming of age" sort of thing.
My brother attended Miami of Ohio during his transition from enlisted to line officer. They were a large part of the community there and during a few visits I made while he was matriculating, I spoke with a few youngsters in town. They were quite pleasant young folks, not much younger than I at the time! I've always been impressed with folks that can actually live to a lifelong conviction to family and faith!