How the AP Lang composite works
Your multiple choice result is converted to a percentage and weighted at 45%, while the three essays are summed out of 18 points and weighted at 55%. Adding the two weighted parts gives a composite percentage, which this calculator maps to a predicted 1-5 score using common estimated thresholds.
Using the estimate wisely
Essays carry the majority of the weight, so moving from a 3 to a 4 on even one essay can lift your composite noticeably. Because the curve is reset each year, treat a borderline result as uncertain and use the breakdown to decide where to focus.