This would have to be the calculation being made in school districts for this to be political: "Well, we surely could open, but if we stay closed it will fuck Trump hard. So screw the kids!"
People around the country are struggling to make the right call for a situation in which we have incomplete data. In the Netherlands, there was almost no kid-to-teacher transmission; in Israel, schools were super-spreaders. We just don't know.
The people (like me) who want to see schools open are not doing it to support Trump; the people who want to take it slowly are not hoping to hurt him.
We are all just trying to do the right thing for the kids.