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Excel

Practice until the skill holds under time.

Unlimited timed and untimed practice for your exam, every answer explained, and a trend line that shows whether a fixed skill stayed fixed.

Unlimited

attempts, one subject

38

AP exams covered

$9.99

per month

Score trend, 12 testssample
Test 1Test 4Test 8Test 12

1340

est. score now

+80

since diagnostic

12

tests taken

What’s inside

Real exam structure and timing, explanations on every question, and progress tracked per skill.

Practice & mock tests

Full mocks with real structure and timing, or short sets aimed at one skill.

Timed and untimed modes
Flag, skip and review like the real test
Unlimited retakes

Answer explanations

Every question explained — why the right answer is right and what your pick assumed.

Step-by-step working
Linked back to the lesson
Common-trap notes

Progress by skill

A trend per sub-skill, so you can see a fix hold — or slip back under time pressure.

Score movement per skill
Speed and accuracy split out
Retake prompts on slipping skills
What practice moves

Twelve tests in, the weak skills look different.

Sample student, SAT math: the two gaps from the first diagnostic are now the two strongest sections.

Data analysis42% → 79%
Word problems38% → 74%
Linear equations84% → 91%
Est. score1260 → 1340

Sample

How it works
01

Pick a set

A full mock, or a 12-question set aimed at one weak skill.

02

Review every miss

Explanations on each question, linked back to the lesson that fixes it.

03

Retake until it holds

Unlimited attempts. The trend tells you when to stop.

Unlimited test pack
$9.99/ month

Unlimited practice and mock tests for one subject, with explanations and progress tracking. Cancel anytime.

See test packs