There were several parallels between Jonestown and Escuela Caribe. Both places used isolation to control a large group of people and censored their communication with the outside world so their loved ones wouldn't know about the rampant physical abuse and misery of the residents. I think the worst fallout, in both cases, was the living in constant fear, witnessing other residents get assaulted and worrying that you'd be next. That's where Post Traumatic Stress Disorder comes from.