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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: playing with numbers
Note that this article failed to provide adequate information on why states are using the confidence intervals. Even as the congressional leadership was figuring out AYP, researchers Kane and Staiger reported that looking at annual test scores changes was more noise than signal for groups of fewer than about 65; Walt Haney suggests groups of 100 or more are needed. The feds would not allow OR to use a group size of 70 - I think 50 is the largest any state has. Meaning, in small schools, esp. in next few years in states not beating (excuse me, testing) the kids in 3-8 inclusive, the accuracy of data is real shaky. None of this would you know from this article.
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