The history of grading in three minutes - 0 views
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n 1911, researchers testing the reliability of the marks entered on these cards showed that the same material could be assigned widely different marks depending on the markers. However, the research findings changed nothing because the graded report card had taken firm root.
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From 1911 to 1960, school systems experimented with various letter and number reporting conventions. Percentage grading was the most popular system during the latter half of the 19th and the early part of the 20th centuries. In this system, the teacher assigned each student a number between 0 and 100, the number supposedly reflecting the percentage of the material the student had learned