![History of the letter grading system](https://abc17news.b-cdn.net/abc17news.com/2021/12/00historyoftheletter2MWJ_0-375x225.png)
History of the letter grading system
StudySoup used internet sources on the history of education to compile a list of 10 historical milestones that occurred with the letter grading system to lead to where it is today in the United States.
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