AcornPrep, by the numbers.
Counted from the production database, rounded down. Last checked August 13, 2026.
12,900+
questions answered by real students
Individual graded attempts, not sessions or page views.
72%
of those answers were correct
Hard enough to teach, not so hard students drown.
What students have done
- students
- have made an account
- 500+
- essays graded
- against the real AP rubric
- 224
- acorn presses
- the site has one easter egg
- 289,000+
- study friendships
- formed on leaderboards
- 79
59%
of signups start practicing
Accounts that went on to answer at least one question.
Classroom pilot
Mission San Jose High School
One school. We won’t call it more.
Behind the free label
Every item is available to every account. No card, no trial.
- AP courses
- 10
- units covered
- 83
- practice questions
- 4,000+
- free-response prompts
- 50+
- study guides
- 166
- flashcards
- 1,660
- podcast episodes
- 83
- mind maps
- 83
- worked examples
- 166
- exam tips
- 471
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