Well, THAT's positive reinforcement for you!!
But seriously, if I even thought for a moment that an altercation between an officer and my child would result in her being dumped, dragged, and arrested for a minor infraction of school policies, I would get that kid out of that school so quickly, it would make the principal's head spin.
But what this kind of behaviour ultimately teaches kids is that the Authority Figures are always right, even when they are not, and have the power to physically overwhelm, and severely punish you.
As kids who are taught this way, when these children get to become young adults, the State becomes the teacher/officer, and still has the brutal power to silence, and crush you, even to death, even when what you are saying is legitimate.
Look at what the US government is doing to Chelsea Manning, to get a good concept of where this ultimately winds up.
Telling truth to power becomes dangerous, so most people just suck up the lies that ultimately will destroy their lives, if they are not careful.