[T. O'Heir]

"...a bunch of shooting schools..." And every one of 'em teaches something different, according to their own philosophy and State laws. Lot of 'em are owned by self-styled 'experts'. Some of who think being a military Supply Clerk qualifies 'em.
Biggest thing is that you are not going into combat. Whole you do need to be able to shoot well enough to hit what you're shooting at. Plus know when to shoot and, more importantly, when not to shoot, spending piles of money on civilian owned and operated training is not going to matter.
Police officers and soldiers have totally different firearms training requirements. Neither of 'em are involved, in the least, with requirements for a guy who is carrying a firearm for strictly concealed carry defensive purposes.
Most soldiers get little or no training with a hand gun either. A hand gun in the military is primarily a status symbol, but is never one's primary weapon. The average troopie may see a hand gun during Basic and never again. Unless his job in the Service requires him to carry one, while on duty and only whole on duty.
Most cops never fire their issue handgun except for their annual qualifying shoot. If their Department has such a thing. Failing to qualify doesn't mean they're fired or taken off duty. Lot of 'em know absolutely nothing about firearms either. Know a guy who was a cop in Toronto long ago, who with his partner got assigned to the "Bank Car". Only one with a pump shotgun. Neither of 'em knew how to load the thing.