When I first became employed at the local school district, I caught everything that the kids had - didn't matter what it was - that first year it seemed I had one thing after another. Even whooping cough! I was told by other teachers that it takes about 3 years for your immune system to kick in and in that third year it isn't too bad. Well, I am on my third year, and I haven't gotten ill (I don't count the time I ate the school lunch and went home sick about an hour later).

It this were me, I would report my concerns to my direct supervisor / principal in writing. This isn't only your health issue, but a health issue for the kids as well. I would hope that tests would be ordered to determine if there is mold or some other alergin present.

On another note - we have 1st year teachers using Airborne and they swear by it.. there is another over the counter cold medicine - can't remember the name right off the top of my head, but it decreases your symptoms and in some cases reduces the length of time of the cold - our Science department recommends that.. lol