I realized that I had been targeting the light switches as levers. I kept getting sent to the shadow realm and then I realized it was just above the map. When you open/close doors, the door can push you above the map. As long as you walk back when you open the doors, you will be fine. I used the shadow realm to map out the place lol. I found four levers, one in the locked room, then "my room", then school, then in the golden room. I just need the last one and I can't find it. The last room, is it the computer room with three doors? The first left room of the Sonic hall is the book room and it leads to a computer room. It fits the description but I don't see a lever there.