Minnesota Public School Promoting Islam?

There's a categorical difference between "teaching" about a certain religion and promoting a religion.

The article really doesn't describe if the teacher did indeed cross the line by promoting Islam--or if someone misinterpreted "promotion" for "teaching"

I teach about all kinds of religions in my classes; I take great care to impart to students that I'm not promoting any one of them.

Christianity can be taught in the public schools as long as it isn't being promoted or "forced" in any way; same with Islam, from my perspective.