Everyone who has a concealed weapons permit should be allowed to carry a firearm anywhere they go in Oklahoma. That complies with Article 2, Section 26 of the Oklahoma Constitution and allows a minimum and relatively unobtrusive level of investigation and training.
Every SDA class in Oklahoma will have some folks who have never and WILL NEVER carry a gun. They take the class because their spouse or friend wanted them to, for the gun handling and safety training, or just to learn something about guns.
USSA, TDSA, H&H, myself and several others offer handgun training. It is available to anyone who so desires. I am sure if they open schools for concealed carry many of us will develop classes for teachers who want more training. Some will choose to take the training, others will think the gun is a talisman and they only need to have it with them. I think the majority of the teachers who choose to carry will spend a lot of time thinking about it, learning more, and preparing themselves. I also think very few teachers would ever carry at school.