My spouse, with about a decade of teaching experience at the time, once had a former student drop out of high school and start working at as a gas station clerk at a major chain.
The student was making almost as much as my spouse, and if she stuck with it she'd be out-earning my spouse in a year or two. Total comp, benefits included, not talking just wages (school worker benefits are not and have not for some time been that good, really, and at least in my area are now pretty poor compared to offerings in the private sector). Clerking at a gas station. As a high-school dropout.
I'm pretty confident teacher pay is so bad that this "raising pay will draw worse candidates" (where the fuck is that hand-wringing when CEO pay comes up at board meetings? Any pro sports teams worrying they might pay too much to attract good players?) thing is not a real effect worth worrying about, if we're talking pay increases for teachers that are anywhere in a remotely plausible range.
> Really, any job that lots of people are drawn to by the love of it gets crap compensation by default. It affects the supply curve too much.
Sure, and as is typical you get some good people who are semi-retired from a better-earning career or have a much higher-earning spouse, who don't really need the salary at all. You don't get the trust-fund kids as much, as in other careers that are similarly pro-social or artistic, since teacher social status is somewhere under the floor, but otherwise it's similar.
But that's not enough, and I don't think paying teachers 50-75% of what any decent teacher could make doing something else with a teaching degree—not even assuming some entirely different life-path—is a great way to get a good candidate pool. Enough bodies, based solely on some idealistic drive (check in again in 5 years, let alone 10, on how well that's doing sustaining them, and for the ones who do need the money, which is most of them, on how their financial situation is adding to the stress that's driving them out of teaching) sure, but not enough good candidates. And it's not enough to keep the good ones around.