Edited sentence: Among the features of the building were a state of the art ventilation system that changed the air in the entire building once each six minutes.The basement, which would hold industrial arts shops, and the third floor, which would hold the gymnasium, science labs, and rooms for cooking and sewing rooms.The building was designed to be used for kindergarten and grades 5-12.The school, Oak Park-Ridgeland High School, was opened for public inspection on the afternoon of 1 January 1892