I can understand religious schools being abusive. But this guy states that they came and kidnapped him from his own where everyone he knew could no longer see him and cut contact with everything. And then forced him abusively into a style of life and basically jailed him for 2 years.
http://www.horizonacademy.us/faqs.html
Q: Once I make the decision to enroll my teen, how do I get them to Horizon Academy?
A: Your admissions representative will assist you through different options for getting your teen to the school. Each situation is different.
Some students will come voluntarily, while others will not. We let you determine what you feel is best for your child.
They pretty much flat out state that they can have people kidnap your kid if you want them to.
4. Q: How often are visits allowed?
A: Visits and phone calls are allowed with the teen reaches the appropriate level of status as an earned privilege.
You have to be there for a long time if you want any contact other than through letters, and the reddit people claim that they go through all the letters before sending them.