We finished the school room today.
We ended up using paint on it after all, because the Sharpie showed through several layers of primer... and the first layer of paint.
The idea is that they will learn that actions have consequences. Someone writes on the walls with permanent markers, someone has to paint the walls.
I am really pleased with how this turned out. The color is very cool and calming. I have a new favorite, Wal-Mart's Color Place "White Springs." It might even make the carpet look a little less ugly... maybe.