Standardized tests are developed by a team of experts and are administered in standard ways. They are used for a variety of educational purposes including accountability. Most elementary and middle school teachers are likely to be responsible for helping their students attain state content standards and achieve proficiency on criterion-referenced achievement tests. In order for teachers to interpret test scores and communicate that information to students and parents they have to understand basic information about measures of central tendency and variability, the normal distribution, and several kinds of test scores. Current evidence suggests that standardized tests can be biased against certain groups and that many teachers tailor their curriculum and classroom tests to match the standardized tests. In addition, some educators have been caught cheating.
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