"Run by a skilled team of Thai military police instructors under the leadership of an elite VIP bodyguard" Could be military police who are instructors, could be military who have once taught the regular police, could be people who once taught the military police, it's not clear.
Talked with the owner, he recommended the language courses instead. So I'll be on the look out for a good one.
You can get an education visa for Thai language, so you'll learn the language, only have to go one or two times a week & have plenty of time to train.