Raw material in, finished product out. In the business world, if the widgets do not come out right, it is the fault of the manager, the foreman and the workers. A team that produces 70,000 widgets a year deserves a larger raise than a team that produces 50,000 widgets a year. A team that produces only 25,000 widgets a year deserves to be terminated literally. Life is so simple when you are the mayor.
Merit pay is the answer.
If you figure out who the best teachers are and you give them a large raise then all of the teachers will want to become the best teachers and the system will prosper. Unfortunately, life is not so simple in the schools. Merit pay has never worked in school systems as it allegedly does in industry because schools are not factories. They do not take the same raw materials and fabricate a product as factories do. Even the media cannot fathom the school merit pay system.