How to Predict Your AP Exam Score Based on Your Class Grade

The Grade vs. Score Disconnect

Every year, parents are baffled when their child brings home a report card with an 'A+' in AP Chemistry, but then scores a '2' on the official College Board AP Exam in May.

"How is that possible?" they ask. "If he mastered the class, shouldn't he master the exam?"

The answer lies in the massive disconnect between how high school teachers grade, and how the College Board tests.

The Grade Inflation Problem

In many American high schools, a teacher will inflate grades to keep parents happy and protect students' Weighted GPAs.

They might give open-note tests, offer massive extra credit for bringing in boxes of tissues, or drop the lowest test score of the semester. A student can earn an 'A' in the class without ever truly mastering the rigorous, college-level concepts.

The College Board does not offer extra credit.

The AP Exam is a brutally standardized, timed, and rigidly curved assessment. If a student's 'A' in the class was built on extra credit and open-note tests, they will be utterly destroyed by the AP Exam.

The Statistical Correlation

Is there any correlation between your class grade and your exam score? Yes, but it depends entirely on the rigor of your specific teacher.

The Hard Teacher (The Ideal): If your teacher gives brutal, timed, AP-style multiple-choice tests all year, and you barely scrape by with a 'B', you are actually in a phenomenal position. That 'B' is battle-tested. Students with 'B's in these rigorous classrooms routinely score 4s and 5s on the exam.

The Easy Teacher (The Trap): If your teacher gives easy vocabulary quizzes and you have a 100% 'A+', you are in danger. Students in these classes routinely score 1s and 2s because they have never been subjected to the intense timing and analytical rigor of the real exam.

How to Test Your True Readiness

Do not trust your class grade. In March, you must take a full-length, previously released College Board AP Exam under strict timing conditions.

Grade it ruthlessly. If you score a 65% on the raw multiple-choice section, you are on track for a 4 or a 5 (because of the massive AP curve). If you score a 30%, you are failing, regardless of what your high school report card says.