I am not taking a stance either way on having teachers armed but if you would, please:
1) Please detail, as verbosely as possible, what the protocols, and details of gaining access to this locker would be.
2) In addition, please describe, in best and worst of conditions, what the projected elapsed time it would take to present these to target.
A weapon locked in a closet is more useless than a paperweight. An unloaded one is a metal club...
The arms locker would be kept in the office of the school, and would in actuality be a small gun safe, to prevent one person with a gun from gaining access to even more guns. Preferably, it would be hidden from sight, but not kept in a locked room, as it is a locked safe.
There would be two locks, either opened by keys or combination. Combination would likely be more secure, as you can't take a combination from a dead man. A total of 6 people (or more in a larger school) would be involved in the opening of the arms locker, with 3 of the people knowing the combination/having the key to one lock, but not the other, and the other 3 knowing the combination/having the key to the other lock, but not the first one. Nobody is to know the combiation/possess the keys to both locks at any point in time, to ensure at least two people must know about and authorize access to the firearms stored within the safe.
The purpose of multiple people being able to open each lock is to allow for people being sick, or incapacitated in an emergency. Idealy, the 6 individuals would be seperated from eachother, to help ensure there is at least one person that can open each lock who is present and uninjured.
In larger schools, multiple arms lockers could be dispersed througout the school, to allow for quicker response. Locks would be standardized between arms lockers, to simplify the system.
Those in possession of the keys/combinations would be required to carry radios at all times when on school grounds. If an incident is reported that warrants the use of firearms, the people involved with the opening of the arms locker are to procede to the location of the arms locker as quickly and directly as is safe to do so. Predetermined routes are to be identified based on general location in the school. If possible, nobody will proceede by the same route as another person, to the extent that any detours nessecetated by alternate routes do not constitute a delay of more than 2 minutes, if not possible, and multiple people are in close proximity, they are to put a 30 second interval between their departure times, so that if the first is fired on, the other(s) may backtrack and detour.
Elapsed time will vary greatly with the situation.
Best case scenario
school is relatively small, and the office is not the first target. Warning is given by the office as soon a shots are heard, and the shooter is not obstructing the path to the arms locker. I would estimate time to be between 1 and 3 minute to opening the locker, and up to another 3 to engagment of the hostile gunman, again depending on size of the school, and location of the shooter.
Worst case
probable scenario
school is large, but old and poory laid out. Shots are not recognized as such, warning is not given immediately. The office or location of the arms locker is targeted first, any any school personelle present are incapacitated or killed. Layout of the school prevents people involved in opening of the arms locker from taking alternate route, and shooter has incapacitated or killed one of their group in his initial assult. Shooter is blocking another member from proceding directly to the arms locker, nessecetating his/her exiting of the school building, and entering another door. 4 other members must take the same route in order to avoide excessive delay by detours. Due to the 30 second delay between departures, response time from first shots fired to opening of the arms locker is up to 15 minutes, with another 5 to 7 to engagment of the shooter, depending on exact layout of the school, and location of the shooter.
Completely irrational/inept shooter scenario
Shooter assults the office or location of the arms locker first, incapacitating or killing all staff members present. Shooter is aware of the existance of the arms locker, and holds possition to kill those attempting to open the arms locker. Response time from firing of first shots to engagment of the shooter is incalculable, and entirely dependent on response time of local law enforcment.
Having a gun that can't be used for 15 minutes might not be as good as having a gun that can be used imediately, but its also more secure, and is still better than having no gun at all, which is my point.