It’s not so much that there is a shortage of teachers as a shortage of people who are willing to teach in the current work environment that they are being given. A whole lot of places have made it completely untenable to take that job, with pay that doesn’t even come close to buying enough BS tolerance. When you’re being idiotically micromanaged to death by state legislatures, and asked to do so for mere peanuts, yeah, you’re going to get a teacher shortage because they’re all going to go “you aren’t paying me anywhere near enough to put up with this” and walking. Even states like Florida that are putting unqualified veterans in teaching positions are quickly going to find out that the veterans aren’t going to put up with those conditions either. Just like everywhere else, the problem isn’t a shortage of qualified people. It’s a shortage of people willing to put up with awful working conditions and pay.