How does the AP Chemistry curve work???

Question

Ok when we take tests in AP we have a curve. like if we get a 23 on the test shell add 50 points to it. but the higer grade you get, the lower the curve. how does it work if i had a 75 on a test?

Answer 1

A standard practice for most teachers when doing a curve is to set an average and then raise every grade to meet such average.

For example if the class average was a 60%, the teacher could raise the average to 75% and increase everyones test scores 15%. In that case the people who originally had a 75%, would be bumped up to a 90%. In most cases this will give the few with the highest grades an A, the average around a C, and the few with the lower would be D or F range.

I once had a professor who did his grading solely on standard deviations and class averages. Whatever the class average was [assuming it was below a 75%] was instantly a C. He then calculated the standard deviation of everyones grades. People above the average one standard deviation got an A, and people below the average one standard deviation failed.

Answer 2

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RE:
How does the AP Chemistry curve work???
Ok when we take tests in AP we have a curve. like if we get a 23 on the test shell add 50 points to it. but the higer grade you get, the lower the curve. how does it work if i had a 75 on a test?

Answer 3

All the tests are graded and the points added up. The scores are then arranged from lowest to highest and the standard bell "bell shaped curve" statistics are applied. So, you are competing agains all the other people who take the test.