Regarding the cop slinging the girl across the classroom: What physical means to get her to comply would have been justified?

This video got me thinking. I agree with Aunt Boo that the cop was 100% in the wrong, but when you hear the Rest of the Story, what action should he have taken?

To recap, the girl had been doing something wrong, don’t know what, and the teacher asked her to leave. She refused.

The principal came in and asked her to leave. She refused.

The cop came in and told her to come with him. She refused.

At that point, what would the officer have been justified in doing? We have to assume that she would not come willingly or passively, and in fact, you can see her starting to struggle before the cop took her down. At that point, did he have the right to put his hands on her and physically compel her to comply, and in what way? What other physical means would have been allowable?

Should he have called in 3 more cops and have them haul her out, desk and all, without ever touching her?