The consensus of this thread seems to be that the student refused peaceful requests to leave and force was necessary to remove her. And with 20/20 hindsight, some would have chosen a different option than the school officer. Excellent.
FYI - not hindsight. Some of us have faced recalcitrant teens before and with current sight chose completely differently. She is not the first teen in the universe to say, "no," 15 times. We weren't all waiting for this cop to be the first one to deal with it.