As long as it takes. The kids are learning nothing but tree hugging anyway. Nothing will be lost but free babysitting.
If there's a 1 in a million chance a kid could get hit, would you want to be the mother of that one for the sake of a stupid public school and it's government funding?
They should have shut them down much sooner, and the 13 year old wouldn't have been hit.
Hmmm, I guess I'll have to modify my curriculum to suit your idiotic prejudices then. My honors English class was going to be looking at Sir Gawain and the Green Knight tomorrow, including some selections in the original Middle English. But I guess I'll have to trash that now.
Oh, and post your occupations while you are at it, so I can make general statements about your incompetence (which, judging by your statements so far, would probably be more accurate)...