There are some disciplines in teaching which are easier to improve than others. There are some local Bay Area schools with an excellent standard for performance

There are some disciplines in teaching which are easier to improve than others. There are some local Bay Area schools with an excellent standard for performance, with a near-majority of students in the fastest math track and with about half the math faculty as Calculus teachers. I can't imagine any teacher who enjoys math who'd want to join a school district where the kids don't like learning and where the teacher has to basically be a second parent. A higher salary wouldn't fix that specific problem.