No one wants to place a senior (expensive) teacher in their school (and in their budget) when they can get two newbies for the same price, then use 'em up, burn 'em out, and replace them with fresh ones.
You my friend are exactly correct. Public education is a service industry. Hire the newbies at entry level salary and work them like dogs. After 2-4 years they quit and you hire a new batch. As an urban teacher of 29 years they hate me cause Im a survivor. They continue to give me shit schedule shit kids and no pay increase. They want me gone. I have no integrity its merely a job with partial health insurance and a 50% after 30
years of psychological and emotional abuse. I survive because I dont care.