USATODAY reports new growing treatment (experimental) for encouraging teachers in the States. I must say I am very pessimistic about it. Salary based on level of degree, students' test scores, seniority, etc. may help in some ways, however, it may not work well in the long term. Basically, teachers and students would learn how to be spoiled. Americans love to solve everything with money alone, instead of proper research which costs more heartaches, headaches and suffering in addition to $.
On the other hand, their failure may encourage REAL teachers to step in, silently, and with temperance.