Other school districts can and have applied their codes of conduct to non-school related activities.
Granted it's not zero tolerance because he wasn't expelled.
I'm not, and never was, happy with the overreaching disciplinary actions taken by school systems. I think it tends to be reactionary and counter-productive. But your claims are still not accurate. While I disagree with the policies, and I think they are bad, they are as bad as your claims.
That's pretty close to what you say. Of course you set out an impossible claim of the school stating that it has "nothing to do with school." The argument from the school system in cases like these is roughly that out-of-school behavior has an impact on the school, so all behavior can be punished by the school system.
Weapons yielded suspension and automatic recommendation for expulsion. Administrators did not have to agree with the recommendation.
With that said, I don't like the "automatic recommendation for expulsion" parts of these policies. Even if administrators don't need to adhere to it, making it automatic is silly in the edge cases. I don't think it helps.
My school did something similar, but the surveys were anonymous and simply used for aggregate statistics - which sounds infinitely more effective than what this school is doing, anyway.