Trouble with not remembering who is in the toilet? Here's your solution!
I only allow one student to be out at one time. They find their name, move it onto the 'bathroom break' poster and I never lose track of who is out of the room. Once they return, they move their name back around the edges so the next person knows when it is their turn to go. I still require them to ask before they go.
Simply print, write in your students' names and its ready to go!