A one page document on bus manners and rules. At my school we do not get up from our seats until the driver walks through the bus to the back to start unloading the wheelchairs. This is how it is written on the work sheet
"Stay in your seat – Do not get up from your seat until the bus has completely stopped at your destination. If you are riding in a bus with wheelchairs, please stay in your seat while the bus driver moves to the back of the bus to start unloading. This will make the process much faster."
I can remove the last part of that statement if you would like.