The three sections of the test are scored independently. Each of the three scores range from 200 to 800. The total test score ranges from 600 to 2400. The average score for each section is about 500, and thus the total average score is around 1500. There are two steps in the grading process:
Step 1. Calculating raw scores.
The raw scores for each section are calculated based on the number of points gained from correct answers and lost from incorrect answers. Here is how different types of questions are graded:
The raw scores are rounded to the nearest whole number (e.g. 43.25 is rounded to 43, 43.50 to 44).
Step 2. Converting raw scores.
For each of the three sections of the test, there is a conversion table used to convert the raw scores into a number between 200 and 800. This process is called equating. The conversion table is adjusted from test to test in order to standardize the tests. In addition to the scaled scores, a percentile ranking is assigned to each test, which shows the percentage of students who scored less that this particular test.
The following is the Mathematics Conversion Table showing the ranges of scaled scores*: