Bill Gates on how to improve education in American schools by focussing on excellence in teaching. Excellence in teaching is the single most important variable in education, says Gates. The task, he says, is to identify the excellent teachers and transfer those skills to other teachers. He makes no mention of enriching the teacher pool, by attracting brighter education oriented people from society into teaching. He make some generalizations about class size and teachers studying for advanced degrees, saying they have no impact on educational achievement. This may be relative to the situation, depending on the actual class size and the numbers involved. And higher educational attainment by teachers is hardly a drawback in what the teacher can impart to students. It shows teachers actively engaged in the educational process themselves. Gates talks about improving education without additional spending, but does not address the issue of cuts in education spending in states that are reducing deficits. ...