principians stop breaking the rules, we're not allowed to argue, but just because you're throwing crap out there.
public schools are usually backed by government fiat, so if you're impersonating someone with federal credentials: that's pretending to be authorized by the collective governance of the people, which belies basic societal rights. furthermore, using a patented school crest and a forged signature on a graduation certificate are both illegal. also neither of these are actual speech, rather actual physical actions done as deceit. hell, impersonating someone on public ground is not illegal, unless you provide forged documentation, are speaking to a public official, displaying their personal information without consent, or are inciting violence against them. you're equivocating both public and private rights, and you're also not considering the high school level philosophy of rights and liberties, which is that your rights end, where another's begin. this is why free speech is not allowed to directly incite violence against an individual, but not extended to block unpopular speech. you have a right to your own personal opinion, but not to threaten another with bodily harm
now PLEASE, DM me if you want to talk further, but let's stick with the OP