I went to a peculiar elementary school where the hallways were all outdoors.
Instead of attending classes in a large building with indoor hallways, my school was made up of classrooms in individual buildings that were connected by covered walkways that would at least shelter us from the rain whenever there were severe rainstorms outside.
Even if the air conditioning systems in the school had been optimal, this school design is being fazed out as an attempt at school shooting prevention. The problem is being able to thwart a threat when a person could sneak onto campus in two dozen different locations and wipe out multiple classrooms before being detected by campus police. After there was a national school shooting in a similar campus, our state moved forward with rebuilding the affected schools. However, I learned that my old elementary school had already been slated for reconstruction because of mold that was found in their central heating, cooling, and ventilation systems. The school is in a naturally humid environment with lots of heat, which meant the air conditioners were running frequently. Since the a/c systems were shut off entirely at night, that allowed the mold to grow inside the ductwork and air handlers. I’m glad that current students at my former elementary school can finally benefit from cleaner air and safer hallways. I can’t imagine what sort of an effect all of that mold exposure has on a person, especially a teacher or school official. They were working for hours at a time in their offices without any break from wherever they were located with their workstations. At least the students got fresh air from time to time.