re: "Half the schools are below average" - not always true

quote:

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Half of all schools score below the Median score.

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Just something for all to consider. Schools and students are not the same pool. For example, private schools tend to have more above average students than public schools. But private schools tend to have much smaller student bodies. Therefore they are over-represented in the pool of 'all schools' vis-a-vis the pool of 'all students.'

And don't forget. All the children in Lake Wobegon are above average.