This is simple, cell phones should never ever be allowed in the class room. Had that person been white, this BS would never have been reported.
The word “should” has nothing to do with this.
That was probably already the case.
In my school, cell phones were banned for years. But how do you enforce that? You can't pat down every person entering the building. We put up a big sign, but problem students, of course, just ignored that.
Eventually we got metal detectors, cell phones were taken, and then returned at the end of the day. Then parents started to complain: My kid might need his phone in case of an immediate family emergency!
Those parents vote (and they can sue), so the school board caved. Students can keep their cell phones as long as they are off.
Result: Incidents of students talking on their phones in class happen DAILY somewhere in the school. So the kids gets suspended for a day. What do they care? It's just a day off from school.
I thought of that, but that requires every teacher to be familiar with cell phone jammers. They do exist, and they work.
However, I don't know their effect on any wireless communications the school computers might use.