The official policy is neutered, and it must stay that way. There is no other choice. First off, the official policy for students must operate under the assumption that each student has below average physical and mental abilities. Otherwise, the powers-that-be would be setting themselves up for a plethora of lawsuits. The school system would lose in court and would go even further into the red, not a good thing for either side.

Further, the path was set awhile ago when schools were designated as gun-free zones. You cannot have that law while also having a policy of aggression against a gunman. You cannot remove the most suitable means for responding to an aggressive gunman, and then also describe a manner in which a student should respond aggressively against the gunman. The powers-that-be would be speaking out of both sides of their mouth and instructing students, via keyboard pounding, on how to be superhuman.

Notice in some videos of Virginia Tech armed cops are cautiously taking cover behind trees outside the building. I am not critiquing them. I am saying that if their official policy was to sit and wait, then they cannot expect anything more from unarmed students.

Unofficially, the students can take it upon themselves to respond aggressively against a gunman. However, the powers-that-be cannot officially endorse such plans due to reasons stated above.