My SO quit HS STEM teaching recently, so I have at least some idea of the modern teaching environment. The issue, for my SO, was pay and benefits vs. hassle. My SO has a PhD and decided to give back to the community at an 'impoverished' school. Ho boy, was that a mistake. The first school was a terrible experience and my SO went gray from the place. Though there are a few parents that are as described in the parent comment, the vast majority of parents were all but useless. The HS my SO taught at, and I am not making this up, has a mandatory grading format for every single test/HW given: multiple choice only, only 4 choices are allowed. Combining that with the faux-restorative-justice [0] grading scale, where a 25% score in a class was considered 'passing', and even a goldfish could pass the classes. Yet still, the graduation rate was ~30%, only because of the Air Force Base nearby. Just trying to get the kids to even take the test was impossible, let alone the truancy. The teacher drop-out rate by December was ~50%. Neighboring schools had teacher drop-out rates near 90%. Yes, teacher drop-out rates. Thing is, poverty and racism and violence suck really bad. The many of the parents were desperately poor, ~80% of the children were on free and reduced lunch, and many of those would not eat all weekend long, let alone the apple vs Cheetos 'food desert' debate. Then the physical abuse of the children comes in, and 'home' is not a safe place at all. Then the sexual abuse kicks in, and home is REALLY not a safe place for a some of the teen girls my SO taught. Then you have the flagrant use of phones, the sexting, the porn use, the gore, etc. in the middle of 40+ child classrooms. It was/is a mad-house. It's no wonder all the more well off folks refuse to send their kids to public schools. God knows we would/will.

And my SO, with a PhD and therefore 'top' level seniority in the union pay-scale, made ~40k in a large, expensive US city with median houses at ~0.5 million. The benefits were, otherwise, ok-ish. No dental, no vision. The pension (yes, they still have one!) has been gutted since 2008 and is massively underfunded, so a total-write off.

Now my SO works in the field that the PhD was/is in and pulls ~80k with amazing benefits/401k. Teaching, like my SO had to do, was in no way worth any of it. My SO did time in 'service' to the local community and now considers the dues paid.

[0] Actually, restorative justice models are pretty brilliant, if implemented properly. I think they should be the norm.