satll chem score conversion table

Parents Forum
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<p>Parents please, do you know why the conversion table changed in the new version of official satll test for chem?
85-82 Raw scores equals 800
81-80 " " " 790</p>

<p>The old version
85-78 Raw score equals 800
77-76 " " " 790</p>

<p>Did collegeboard change the scale score from this year?
I called the collegeboard twice and they(people who represents collegeboard) had no idea about the scale score.
One person told me that if you omit one question you can not get 800. I said goodbye.</p>

<p>Please let me know. My son will be taking chem in Oct. He was pretty confident until he saw the new conversion table. Many thanks </p>

<p>Oh and the difficulty of the test was similar to previous real satll chem.
My son also studied Barrons, Kaplan, PR, McGraw Hill, so he pretty much know and can compare the tests. The new conversion table is so harsh on the score. I really hope CB did not change the conversion table. Hope it is a mistake. Thank you any comments will be greatly appreciated.</p>

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<p>doesn’t anyone know this?</p>

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<p>It’s called EQUATING. The Educational Testing Service (ETS), the designer of many of the College Board tests, was one of the pioneers of item response theory and the statistics of figuring out which of two different versions of a test is “harder” or “easier” for the tens of thousands of distinct students who take the test. The idea is that a standard score of, say, 800, should indicate about the same level of chemistry ability, no matter when the test-taker took the test. Learn chemistry thoroughly, get a higher score.</p>

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<p>thank you tokenadult.</p>