He'll spend time in prison but he may have to escape death in there because from what I've always heard inmates hate child molesters and they will do what they can to get to them.
He should have his penis only removed and his face tattoo'd with permanent make-up. Leave his balls so he has a sexdrive but can't achieve release. Give him a sweet prison nickname like GingerFish then throw away the possibility of parole.
If it is molesting students, & spoiling a budding flower, before it blooms, I feel it is the biggest crime,Don't you have grown up's for enjoying your fantasies.
He should be locked away for life.