Reading down the list of what he did:
1. Befriended teenage boys
2. Groomed them for abuse
3. Attempted to abuse teenage boys after plying them with alcohol
4. Did abuse one student
5. posed as promiscuous college co-eds (I presume online) to trick boys into sending him nude photographs

Number 4 warrants significant jail time, and furnishing alcohol to minors is nasty, but I'm struggling to find 18 years' worth of crimes here. And I'd like to know where all the parents and school administrators were.