What if this is some of that nasty crap they reported al-queda (SP?) had aquired from the ruskies that would melt flesh or something like that?
What if its bio or chemical in nature? Maybe thats what they have no clue yet?
Relax. If people were really worried, all they have to do is not send the kiddies to that school- the rash goes away when they go home. A bioweapon would infect them and the symptoms would be continous; a chem weapon would do permanent damage.
Chances are, the school has new carpeting or other new modifications, and the stuff is outgassing. Happens all the time with new construction.
Or they're handing out too many condoms in sex ed, too many surgical gloves in biology lab, etc,- latex can cause a hive-like reaction for some folks, or for people exposed to too much of it. Urethane will as well. ; )
My suspicion is that the US has been under low level attacks for years, if not decades, of various bugs and germs and chems.