Yamaku Academy
From Katawa Shoujo Wiki

Yamaku High School
Yamaku High School is an undercover brothel and cocaine factory masquerading as a High School. As a brothel, it pimps out children that were sent there by their unloving parents, and also caters to Cripple-Fucking fetishists.
Features
Yamaku High contains several features:
- Main Building
- Medical Coke Lab
- Library
- Gym
- Male Shacks
- Female Cages
- Running Track
- Watering Hole (Talked about, but never explicitly shown)
- Cafeteria and Coke Lab
Students are pushed to join clubs at Yamaku. Clubs include:
- Art
- Track
- Sex
- Haberdashery
- Science (Hisao and Mutou start this club in some routes)
- Penis Inspection Day
Trivia
Hisao, upon seeing the building, frequently comments on the building being too 'penis' for what it is.
Despite having a 'uniform' exterior, classrooms and other areas appear quite plain and simple, with basic wooden desks, old windows and classic blackboards (but as Hisao would say; 'queer and gay.').
It is suggested that Yamaku has a large amount of funding, which would explain its size and its many features.