Sign for classroom door if the teacher is in a different room from normal.

This is a free publisher download which simply alerts other members of the school if you are teaching in different room to normal. Type your name at the top, delete the prompts and then print onto A3. It will need to be laminated so you can write the name of the class and the room you are working in. Either hang outside your room or blue tack onto your door. After the lesson, wipe off the information and use it again on another occasion.