https://www.facebook.com/kayel.ellis/videos/10156094308525567/

And no its not the exact same situation as in SC but it illustrates the fact of the importance of a teacher maintaining order and discipline in the classroom by enforcing rules even for minor offenses such as pulling out a cell phone because once you start letting the "small" things go it can eventually escalate to the a situation like this really fast.

The young lady in SC obviously had some specific unfortunate personal issues going on that obviously everyone involved wasn't aware of at the time. But this is the type of stuff some educators have to deal with in school on a daily basis.