But rather than creating a true evaluation system that would be able to create better teachers and identify the strong teachers, they are just doing a blanket firing.

I wonder what they are going to use to rank the fired teachers. Personal preference? Who is cheaper? Less senior employees who don't have as good of pensions?

If they thought this process through and decided to create an evaluation system, I think a lot of people would understand. Just firing everyone to cherry pick who you want based on some criteria that isn't formalized seems... too politicized.