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AcornPrep

Small steps.
Stronger SAT.

Practice with purpose.
Learn the why with Sprout.

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Try a little Math

2x + 6 = 18

What is the value of x?

Pick an answer. Sprout is here to help.

AP courses
10
practice questions
4,000+
questions answered by students
12,900+

Seven ways to practice.

Ten AP courses, each with its own character.

  • 1,660flashcards
  • 166study guides
  • 83podcasts
  • 83mind maps
  • 166worked examples
  • 471tips
AtlasAP World History
Pick your AP courses

What practice looks like here.

  • SAT question bank
    AcornPrep SAT question bank showing a hard Reading and Writing transitions question, with the passage on the left and four answer choices on the right.
    A Digital SAT transitions question, passage beside the choices.
  • AP practice
    AcornPrep AP Biology multiple-choice practice showing a membrane transport question with a dialysis-bag data table.
    An AP Biology question built on a real data table.
  • Sprout, the tutor
    Sprout, the AcornPrep tutor, giving a short hint about water potential with a guiding question, and quick actions for a hint, a walkthrough or the key concept.
    A hint and a question back, never the answer.

Where AcornPrep is today.

  • Main focus

    Digital SAT

    Adaptive mocks, a question bank and practice estimates on the 1600 scale.

    Open Digital SAT
  • 10 courses

    AP courses

    MCQs, rubric-graded FRQs, Sprout the tutor and a study library.

    Open AP courses
  • In the works

    The ACT

    English, Math, Reading and Science, scored 1–36. Not open yet.

Before you start.

Is AcornPrep really free?

Yes. Every AP course and the full Digital SAT, with no paywall, no trial clock and no card. The only limit is a fair-use daily cap on Sprout’s SAT tutoring.

Do I need an account to try it?

No. Try the warm-up at the top of this page first. An account saves your answers, your streak and your study plan.

Is it like the real Digital SAT?

Mock tests use two timed modules per section, and module two adapts to how you did on module one. Scores are practice estimates, not official ones.

Which AP courses are there?

Biology, Chemistry, Calculus AB, Statistics, Psychology, US History, World History, Macroeconomics, Microeconomics and Computer Science A.

Will Sprout just give me the answer?

No. Sprout teaches the idea first and won’t confirm a guess. That’s on purpose: you remember what you work out.