The Adaptive (ACE) test adjusts difficulty in real time based on your speed and accuracy. Answer 10-20 questions — accuracy gets you points, but efficiency decides how many.
How it works:
Answer correctly and quickly to jump to harder questions
Answer correctly but slowly and difficulty holds steady
Answer incorrectly and difficulty backs off
Skipping costs no difficulty, but earns no points
Changing your answer before it locks in costs a small penalty
No account needed — we'll remember you on this device.