99th Percentile Grading Systems

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“At the end of the semester, the total scores for all students will be arranged in numerical order, the score that corresponds to the 99th percentile (S99) will be determined, and then letter grades will be
assigned based on this percentile score as follows:
A: Total Score ≥ 0.90 x S99
B: 0.80 x S99 ≤ Total Score < 0.90 x S99
C: 0.70 x S99 ≤ Total Score < 0.80 x S99
D: 0.60 x S99 ≤ Total Score < 0.70 x S99
F: Total Score < 0.60 x S99 or if you fail to complete 10 of the 12 lab
projects”
This is the explanation the department of chemistry for my college gives. But I don’t understand, so please explain it to me like I’m five.

In: Mathematics

9 Answers

Anonymous 0 Comments

Slightly off topic rant, someone gored my Ox :

they replies i’ve seen here are all pretty much spot on. On the other hand there is a problem with “grading on the curve” if you are to strict with it. a class i took in college was pretty easy, at the end of the semester all students had averages between 92% and 100% the professor proceeded to give the proper grades on the bell curve, meaning the 92-93% scores were failing, 94% was a D, 95 a C 96 -97 a B, 98 an A, (the numbers might be off a little, this was 40+ years ago) there was a great wailing and gnashing of teeth several meetings with department heads and deans, everyone ended with an A for the course. and the professor was much more reasonable in the future.

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