No more interruptions and hand-waving to go to the bathroom. I mount this schedule by the door of the classroom. I number the squares with each students number (abc order # or you can label their names). They take a toilet that says girls or boys and put it on their number (attach with velcro). I can readily see who has gone to the bathroom and they can go when they need to. I allow one girl and one boy to go at one time. I laminated this so it can last a long time. I put velcro in each square and next to the chart to keep the boy's and girl's toilet. The file contains two extra toilets.