In reality, it did not actually work this way. I did get into at least one fight where administration got involved, and they let me off the hook. (Neither of us got suspended, in fact.) In my own view, I 'started' that fight although I did not 'instigate' it, not that the difference matters much. Some kid in line for PE kept kicking the back of my shoes, and after the fourth or fifth time, I started punching him.
Maybe it works, maybe it doesn't, I don't know but I have to at least consider that a few innocent kids getting suspended unfairly for being attacked might be worth it if it prevents more attacks that escalate further.
You could even argue the opposite, that if you're going to get suspended for being attacked you might as well try to bite their ear off and go down fighting, but no one does, they just focus on the innocent kid getting suspended.
But I would suggest that in a debate over whether or not it's a good idea to punish children who are innocent (e.g. being attacked in a one-sided "fight"), the onus is on you to demonstrate that there are benefits to the approach, not on others to demonstrate that punishing innocent kids, or people in general, isn't a bad idea.
On another note I highly suspect residual trauma is a reason for teachers having issues with parents, and schools with willingness to fund. The tree remembers and assumes the worst of teachers based upon their own experience.
What is it with education that makes people so willing to internalize well known Fascist values?
Acceptance of that thought is common; of collective punishment is common; blatant repression is advocated everywhere. If you take the values of a common school and try to apply them to adults, you will get either punched away or arrested.
Kids being unfairly punished for being attacked encourages more attacks, though, especially if it is punishing all participants regardless of role in a manner that is less of a punishment for the kind of people who would be inclined to attack and more of a punishment to those who would not.
I categorically oppose "zero tolerance". It removes judgement, ignores context. It's a strategy for bureaucrats to absolve themselves of responsibilty.
But I actually don't know if it's better, worse, or indifferent. If it proves a net win, I might change my stance.
Please share if you find any such research. Thanks.