It sounds like you might live in Florida, at least with the dates of the school stuff you mentioned. I do, too. Even if you don't, and you certainly don't have to tell us, one thing that's helped me is to find numbers for your county and town (if you can break it down that far - if you live in a place like Miami, that might not be possible), and see how things are for you in your town. Also find the number of peds cases.
Something else to consider is the age of the kids you teach. As far as we know right now, kids under 10 don't seem to transmit it as easily as those over 10. Is your school going to be able to socially distance?
We do know that even healthy people can have serious complications and we don't know why.
It's a tough call.
As you can see from the later article that I sent the link to, the answers aren't as complete or as simple as they thought from the first research. Mostly (according to it), they are saying that you aren't at more risk if you have asthma. But they also talk about whether the asthma is exercise-induced or allergy-induced. I'd definitely read up.
Presumably your school district will have you teaching in a mask, is that right?
Thanks for the link! I will take a read. I had not seen that research before. My asthma is mostly controlled, and I hardly ever have to use an inhaler, so I feel good about that.
Here's an update on those early study findings. Like all else in the world, it's not that simple. :)
https://www.statnews.com/2020/07/02/asthma-covid19-connection-research/
I don't know the answer to your question, but one factor that would likely make a difference is your age.
Also, there was a study done on people with asthma, who the medical world fully expected to have a lot of problems with Covid-19. To their surprise, the rates of infection were low. Speculation was that the steroids in the inhalers (which of course many asthma patients use) kept the lungs from getting the cytokine storms that are so deadly.
If you use an inhaler, you might want to look up references to the study and see if the link has continued to be noticed (between inhaler use and seeming lack of problems with Covid). If you don't use an inhaler regularly but could, if it seems like the literature is still agreeing that this apparent safety provided by the inhalers occurs, you might talk to your doc and see if he or she would be willing to prescribe an inhaler. My son was prescribed a mild preventative inhaler that he was supposed to use daily, and then one for an emergency when short of breath. I'd see if your doc can find out which inhaler seems to be the most protective, and go for it.