Are all Florida schools complying?
If it’s a state law and the teacher wants to do it and goes through whatever legal hoops the law prescribes — it doesn’t look like the school will get a choice.
It’s less likely to happen in more “liberal” areas, as fewer or maybe even no teachers will want to do that. Expect “This is not a ‘Make My Day’ school” signs and the like in such areas. Debates like this aren’t quashed quietly.
It is a tenet of the Liberal Religion that it is much more righteous that many students be killed than that a teacher be armed or, even worse, shoot back. I am not being satirical. Liberals believe that it is not immoral for a killer to mow down a lot of people because the killer has mental health issues and is thus not responsible for his actions. It is highly immoral for a person to defend himself or others with violence because that person is acting rationally and is obviously not crazy and is therefore responsible for taking a human life. I have had this argument with liberal acquaintances, one a now deceased professor at UF. A liberal who thinks all the way through will even posit that those students and teachers who would have died had the killer not been stopped by a citizen with a gun should have died and are therefore wrongfully alive.