Teachers must be evaluated by what students learn

Doug Lasken & Bill Evers:

Students in California public schools are not achieving at the levels they should. Too many students are unprepared for jobs or have to take remedial courses when they start college. In California, we judge student achievement through student scores on statewide tests. These tests assess how much students know about subject-matter content that is specified in an official set of state academic-content standards. Research has long shown that effective teachers are among the best ways to bring up student achievement. But in order to improve teaching effectiveness, it is helpful to know where the challenges are.
We’ve heard a lot in California recently about the move to factor student test scores from statewide standards-based tests into teacher evaluations. Yet did you know that for more than a decade, it has been the law in California to do just that?