In general, all teachers want to work for kids. Public schools have a workforce advantage because of their size. While it's true that unions spent many years making years of service and education important factors in pay (two measurements that have little to do with productivity), it's also true that happy employees can do a lot for schools. And, in general, teachers want to do as much as they can. Mandates and rules don't make people better workers, however, and neither does fear.
Public schools that encourage large workforces to achieve goals collaboratively can achieve the dream of a free public education for all. Administrators are horrible at finding the specific skills each teacher possesses that could benefit the whole district, instead focusing on how to make all teachers the same. Imagine any other workplace where you might have a marketing team, a research team, an engineering team, and a manufacturing team, and then imagine the boss saying all of the teams needed to do their jobs in the same way.
If public school districts can identify their assets and implement them properly, the workforce exists to get education done well. Instead, the trend tends to be to identify the latest teaching trend and force all to comply. The pendulum in education has swung to the data-driven drivel, but it will come back to a more holistic approach eventually, and we'll admit that every person is different and has different gifts. When that happens, public schools can rise up with a diverse workforce that can adapt efficiently.