I am on the otherside of this one - our school nurse does NOTHING! We had a few suspected cases last year of Whooping Cough, but they didn't want to alarm any parents ("you knew some parents get carried away") - and they were only suspected cases, not confirmed cases.
And of course the family that was the "suspected" cases were not immunized and 1 was in my daughters class. (of course)
She was sick for weeks - our doctor didn't think it was Whooping Cough - she was immunized for that, she can't get that. Until reports starting coming in, etc. from the State that it is a different strain & maybe 7th & 8th graders need a booster now. Then he believed us & tested her. But he did a blood test, not the nose swab. Now the normal levels were to be (I don't remember exactly, but you get the idea) between 40-60, her test came back around 250-300. Even though both doctors completely freaked & immediately said yes, she is positive - the Infectious Disease Control Center said that it only showed that she was immunized (which doesn't make since to me, but?????)
Anyway I pulled up a site to listen to a child that had a diagnosed case of whooping cough & my husband ran in the room & thought our daughter was having one of her coughing fits again. That is how sure that I am that she had it.
But anyway - the principal (that I demanded to meet with since we weren't notified) didn't think it was their job since it wasn't confirmed cases. I explained how much time off of work, 2 doctors we saw, tests that were run, fever for 3 weeks, etc. But since the doctor didn't know of any "suspected" cases, he sent her to school w/ a fever as long as it stayed under 101 (which it did), and infected how many others. I layed into our school for that one.
They send home notes when lice is in school, but when its an infections, highly contagious disease - lets not panic

the parents.????? That was their words!