Definition for brandishing is literally "to shake or wave" in excitement or aggression.

Bringing up a great point bro, and that is intention to intimidate. How can you prove that that police officer intended to intimidate that little girl? I did not read a line or the girl said that the police officer spoke one word. As I already mentioned, it's very common to find a police officer with hand on gun. Let me ask you, after this young girl is giving her principal an attitude, refusing to follow him to the office and staying with her friends, do you think she was in the clearest mind state. You gonna tell me with all that's going on, the police officer thought this was so important that he felt he needed to intimidate a little girl with a gun because of her shirt?

Find it highly more likely that the police officer was there because it is his legal responsibility to be there when a student and principal are having an interaction. He was there when he had to be and maybe had his hand on his gun, and the girl who is their freaking out is looking for something to make her story seem more dramatic.

Shooting rifles and stuff competitively is cool, but I'm talking about wearing a firearm on your waist for about 14 hours a day. Maybe for you, not wearing a duty belt, it's not all that heavy. But wearing a gun, handcuffs, Baton, radio, three magazines, back up keys, pepper spray, gloves, flashlight, emergency knife is really uncomfortable. Throw in the fact that we're wearing a bulletproof vest under a shirt, very often the grip of the handgun gets caught up between the vest and the body.

Either way, the whole point of the story is that this little girl is creating a mountain out of a mole hill. Her principal is her direct authority, and she has no right to tell him the rules of the school. The school cop has been given a firearm in entrusted to carry around children. There have been no reports that he unholster his weapon, fired his weapon, or threaten to fire his weapon.