I am in a technical profession. several years ago, I left it to answer the call for math teachers. What i learned is that high schools students can't multiply/divide or use fractions. We don't need better paid math teachers we need better parents.
Additionally, to save America we need to increase the achieve gap. Right now the push is to lower the high achievers because low achievers don;t care. The smart motivated kids are being short changed. How many people work for someone who had an IEP versus someone who took AP classes.