Never heard of the song so I listened to it. I have no idea what the lyrics are. I hear a lot of oohhhhhs and Superman, a soldier/Soulja boy every once in a while. I’m not telling my kids to go find that song, but I know they hear worse hanging with the boys.
As far as the teacher using it, I’d have to watch the actual lesson. It seems lazy to use it you tube for a school taught lesson, but maybe it resonates with the kids. If you have a problem with it, the first response to your question is how you should go about handling it.