Of course, I've been somewhat alone with the kids before when I volunteered. But being in a room with the door opened and lots of other people in the building is very different than being alone in a car with them or inviting them to be alone in your house.
Think of it in a school setting. Has there ever been a field trip where there wasn't a second adult? The other parents aren't just there to supervise as the kids go through tours and such. They're also there for general safety.
Supervising teens it's doubly important, because teens are just as apt to do something inappropriate as a pedophile would. Remember that pedophiles are usually nice guys who get along fabulously with the kids, just like Clark gets along fabulously (albeit innocently) with these teens.
Elisabeth
