It doesn't say so here, but students who were not leaving by bus or car would not be dismissed until all the cars had left. In the morning, drop-off could only

It doesn't say so here, but students who were not leaving by bus or car would not be dismissed until all the cars had left. In the morning, drop-off could only be done at the door, and the risk of students making their own way there was apparently too inconceivable to be explicitly ruled out. It seems likely that the policy was a form of CYA-driven fearfulness that was not shared by all of the parents.