Most teachers at that time thought this new letter grading system was an easy, fair and clear way to grade students.

当时的大多数教师认为这种新的字母评分制度是一种用来给学生打分的简单、公平、明确的方式。

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Finally, I provide a score along with these reviews, using standard U.S. academic letter grading.

FORBES: The "Fifty Words" Review Policy

The letter-grading system is popular with the public.

FORBES: Restaurant Letter Grades Make Your Food Worse

In the real world, there are no grading curve and there are no letter grades.

FORBES: Would You Rather Get Into Y Combinator, 500 Startups, TechStars...or Harvard Business School?