This is me drawing up some ideas for the lights using shutter speed on the walls. I want too use a colour for each department and the light will go from the lobby to the class room.

These are ideas for signs on the wall that would have the letters on top; like Art, SEN est. These would be in the walls in the lobby. It will only be one, not a range of different ones because it would make it all messy and out of place.