Honestly, don't you think by now that if there was a biohazard, someone (if not the school, then the city) would have said something?

If anyone bothered to check the local news sites (or even Google), s/he would know that none of the medical supplies were spilled or leaked. Antifreeze and oil were spilled all over, however, and are the only chemicals on the street.

The only comment(s) I can agree with here are those that say we should have been notified so that we could plan for extra travel time. School doesn't need to close for this. Go take your exams.