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Is There a Plateau Effect in Test Scores


"The "plateau effect" theory holds that the first few years of score gains, in which teachers and students are rapidly adjusting to the new test, are "low hanging fruit," and that scores plateau in later years once the "easy" ways of making gains have been exhausted. A recently released report from the Center on Education Policy, drawing from its database of reading and math test results from all 50 states going back as far as 1999, calls this phenomenon into question."