CALCULATING YOUR SCORE
Your score on the diagnostic test can now be computed manually. The actual test
will be scored by machine, but the same method is used to arrive at the raw score.
You get one point for each correct answer. For each wrong answer, you lose one-
fourth of a point. Questions that you omit or for which you have indicated more
than one answer are not counted. On your answer sheet, mark all correct answers
with a “C” and all incorrect answers with an “X.”
Determining Your Raw Test Score
Total the number of correct answers you have recorded on your answer sheet. It
should be the same as the total of all the numbers you place in the block in the
lower left corner of each area of the Subject Area summary in the next section.
A. Enter the total number of correct answers here: _______
Now count the number of wrong answers you recorded on your
answer sheet.
B. Enter the total number of wrong answers here: _______
Multiply the number of wrong answers in B by 0.25.
C. Enter that product here: _______
Subtract the result in C from the total number of right answers in
A.
D. Enter the result of your subtraction here: _______
E. Round the result in D to the nearest whole number: _______.
This is your raw test score.Conversion of Raw Scores to Scaled Scores
Your raw score is converted by the College Board into a scaled score. The
College Board scores range from 200 to 800. This conversion is done to ensure
that a score earned on any edition of a particular SAT Subject Test in Chemistry is
comparable to the same scaled score earned on any other edition of the same test.
Because some editions of the tests may be slightly easier or more difficult than
others, scaled scores are adjusted so that they indicate the same level of
performance regardless of the edition of the test taken and the ability of the group
that takes it. Consequently, a specific raw score on one edition of a particular test
will not necessarily translate to the same scaled score on another edition of the
same test.
Since the practice tests in this book have no large population of scores with
which they can be scaled, scaled scores can only be approximated.