I just read that in Houston seven school custodians were hospitalized after getting sick from mold. Apparently the mold smell in the school building is strong enough for the custodians union to claim that the building is not safe for students, teachers and other staff members. You can read the full article here.
Here are a number of articles about mold found at SchoolFacilities.com:
SchoolFacilities.com Search Keyword Mold