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Ralph Tyler  

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  • The educator Ralph W. Tyler is perhaps best known for his theory that what needs to be measured in the classroom is student learning. As a high school science teacher in Pierre, South Dakota, in 1923, it occurred to him that the tests that students were being given were measuring only a low level of science mastery and not necessarily what students had learned. [Source: Encyclopedia of Educational Reform and Dissent; Tyler, Ralph (1902–1994)]

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https://concepts.sagepub.com/social-science/concept/Ralph_Tyler

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