How PrepGrove measures and what it refuses to claim

The measurement model, the stopping rules, and the limits. You should be able to check how your prep works rather than take it on trust.

How the adaptive exam works

• Measurement: a Rasch model estimates your ability from your answers and how hard each item is, and reports how uncertain that estimate still is.
• Item selection: the next item is chosen against your current estimate, while keeping the mix of topics tied to the test plan.
• Stopping rules: an exam ends when the confidence interval clears the standard, when the item limit is reached, or when the clock runs out. Full exams run 85 to 150 questions.
• Scoring: each of the eight item formats has its own scoring rule, and all scoring happens on the server. Questions and answer keys are stored separately and the key is never sent to the browser with the question.

What the reports do, and do not, say

• Reports show scores, question usage and trends from your own practice, and link to focused drills.
• Nothing here predicts a real NCLEX result. No pass rate and no pass probability is claimed anywhere on this site.
• The report cannot read what you paid or how many days of access you have left.