How the Readiness Score and Scaled Exam Score Work

Ultrasound Analytics gives you two scores per ARDMS specialty across two ways to practice. Quizzes drive a Readiness Score from 0 to 100 that sums up how you're doing on our questions right now. Full-length exams earn a scaled score of their own on ARDMS's 300–700 scale. Both update after every session.

Track 1: Quizzes Build Your Readiness

The Readiness Score multiplies how well you know the material by how thoroughly and consistently you have studied. It combines four factors. Ability is estimated with Item Response Theory using the Rasch model, which accounts for the difficulty of every question you answer, so answering hard questions correctly raises your score more than answering easy ones. Area results reflect how you are doing in each ARDMS content area, weighted by the official content outline so high-yield areas count for more. A Coverage factor holds the score down until you have answered enough questions in every area. A Consistency factor reflects how stable your session scores are, damping wild swings.

Track 2: Exams Rehearse Test Day

A full-length exam is timed and uses the same number of questions as the real registry exam, drawn in the content outline's domain proportions. Your score comes from your percent correct, placed on the 300–700 scale. Our target is 75% correct on a typical full-length exam built to the ARDMS content outline. It's a goal we set. ARDMS doesn't publish a percentage, and 555 isn't a conversion of 75%: on the exam page we draw our target at 555 so the scale looks like ARDMS's. We can't check it against real ARDMS results.

Built to the Official ARDMS Content Outline

Every question in the bank is mapped to the official ARDMS content domains for its specialty. Exams draw their questions in those domain percentages, and the Readiness Score weights your quiz results by them. The quiz scores rest on established methods from educational measurement: Item Response Theory for ability, and maximum a posteriori estimation, which blends your answers with a cautious starting point so a few lucky guesses don't produce an artificially high score.