Newsweek 2010
>>>>Since holding teachers responsible for student performance is now all the rage, from the White House to the political right, let us do a simple thought experiment. Imagine an amateur baseball league in which team owners dictate which bats players use. The owners try to choose the best, but the research on bats is so poor, they have to rely on anecdotesBarry Bonds hit 73 home runs with maple!and on manufacturers claims. As a result, some teams wind up using bats that are too heavy, too fragile, or no better than a broomstick. Does it make sense to cut players who were forced to use ineffective equipment?
It goes without saying that effective teaching has many components, from dedication to handling a classroom and understanding how individual students learn. But a major ingredient is the curriculum the school requires them to use. Yet in one of those youve-got-to-be-kidding situations, the scientific basis for specific curricular materials, and even for general approaches such as how science should be taught, is so flimsy as to be a national scandal. As pay-for-performance spreads, we will therefore be punishing teachers for, in some cases, using the pedagogic equivalent of foam bats. There is a dearth of carefully crafted, quantitative studies on what works, says William Cobern of Western Michigan University. Its a crazy situation.>>>>
http://www.thedailybeast.com/newsweek/2010/04/30/second-class-science.html