Approved! The glass panels will be laid over the regular walls in Sun 1. They are cannot be broken, but they can be removed, and doing so will reveal that they're large panels rather than an actual wall. The projector will be sitting on the desk. The walls occasionally change to show the void school. I will update you if this changes.

The monitor will appear in the principal's office behind the desk, about where the stolen cat pictures were. He will have to remove it and put it somewhere more useful. The screen will occasionally go black, and only the sound of clock bells can be heard. The sound fills the listener with a sense of dread and the creeping feeling that someone is right behind them.