I agree with the above statements, but will add that instead of "curriculum experts" at the state level dictating public school curriculum, it would probably be more beneficial to students if universities were involved in the curriculum selection, or at least had input and suggestions.
More and more college professors are complaining that rising college freshman are largely "unprepared" for the rigors of a true university classroom. Yet, how many states even use university input when it comes to curriculum selection? Certainly, it would seem that this should be built in somewhere, but clearly a disconnection is taking place.
I am in full favor of hiring competent teachers and trusting them for curriculum selection. The problem comes when inexperienced teachers are put in new schools with very little professional-peer support.