We all know that children often "try it on" with supply teachers. One of their favourite tricks is to come into the classroom and sit wherever they choose, rather than in the places their usual teacher has allocated so they work to the best of their ability. A seating plan, made available to supply teachers, is a quick and simle remedy for this problem. It could be kept in the register or fixed to the teacher's desk. The class's usual teacher could put additional information on the seating plan which might be useful to supply teachers, such as the names of groups and the names of the children who belong in each group.