What Are The Precautions To Be Taken To Avoid Pinworms Being Communicated Among Kids?

I'm a school nurse, we have had some reported cases of pinworms. Other than hand washing , cleaning all equipment that the children share on a daily basis, door knobs, faucet handles, hand holding etc. is there other precautions that we can take to slow down or stop the spread of these things. Because Im sure there are some children that do not realize they have them, or not yet anyway. I know they are contagious, especially in small children, so any of your expert information or ideas will be appreciated.