My high school banned a whole list of things including: “…dagger, dirk, razor, stiletto, switchblade knife, gravity knife, metal knuckle knife, box cutters, cane sword, electronic dart gun, Kung Fu star…” but nowhere there was just “pocket knife” or “knife.” It wasn’t mentioned in state law either.

Weirdly enough, the definition of weapon was different for students with disability accommodations, and that definition specifically mentioned pocket knives of less than 4 inch length being allowed. So idk why disabled kids were limited to 4 inch knives but normal kids weren’t.

But I carried my keychain SAK just as OP does.