I think it depends on an individual's perspective. But the more I think about it the more I feel that this was more a case of silly drunken teenagers larking about than any serious sexual assault that is likely to be repeated by the offender(s), I think that perhaps a custodial sentence and being put on a sexual offenders list which make no mistake, will totally ruin this kids chances in life, for his entire life, is a bit excessive for what appears to have actually happened.
Exactly... some community service would suffice tbh.. It very much sounds like a drunken prank gone way too far... future law career now a non-starter, criminal record and some community service would be sufficient