How the AP Calculus AB composite works
Your raw results in each section are converted to a percentage of the points available, then averaged because multiple choice and free response are each worth 50%. The 45 multiple choice questions and the 54 free response points are weighted equally, and the combined composite percentage maps to a predicted 1-5 score using common estimated thresholds.
Using the estimate wisely
Calculus curves shift year to year, and a borderline composite can round either way after standard setting. Use the breakdown to see whether multiple choice or free response is holding you back, and remember that partial credit on the free response questions can move your score more than you expect.