Next thing I'm in court suiting the school district claiming it is racial discrimination or gender discrimination or some other illegal discrimination. Even if I lose, the school district spends $50,000 in lawyer fees to win.
His explanation for "zero tolerance" is by setting absolute rules that are applied 100% of the time then no one can claim discrimination. That makes some sense and is maybe of of 10,000 problems with the USA having a sue-em system for which there is no disincentive against bringing frivolous lawsuits. So even if someone sues you and loses - you probably lost 10s of thousands of dollars to "win." That's how lawyers want it and our government is overwhelming controlled by lawyers.
Someone just sued McDonalds for $1.5 million claiming he didn't get enough napkins and declaring it was racist because a Latino manager allegedly said "you people" when he threw a fit about not enough napkins in the bag. It will cost that McDonald's franchise owner thousands of dollars to "win" that case.