I'm inclined to agree — that there was no paper-trail for the required biohazard cleanup, that there was little to no blood at/around the scene, and that the school was bulldozed before fully investigated (i.e. while [supposedly] still a crime-scene) all indicate that it was choreographed.
Even if it wasn't fully theater, I'm sure it was staged/provoked by government agents/agencies.
(There's just too much weirdness surrounding it for the official story to be accurate in any sense.)