ATI Comprehensive Predictor: Questions, Scoring, and How to Prepare

The ATI Comprehensive Predictor is ATI’s end-of-program exam: 180 questions across every subject, with a predicted probability of passing the NCLEX on your first attempt. It is part of the Content Mastery Series but covers all nine areas at once, and ATI includes clinical-judgment items. Your school sets the target.

What the score report shows

In ATI’s 2019 educator guide, the report includes:

• Your percent score, with national and program comparisons.
• Your predicted probability of passing the NCLEX on the first attempt.
• Topics to review, organized by NCLEX client need.

ATI does not publish its score-to-probability table, so charts online are unofficial. Schools set their own cutoffs on the probability: the University at Buffalo requires a retake below 90%, and UNMC uses 92%.

How to prepare

It mirrors the NCLEX, so prepare like the NCLEX: mixed questions across subjects, weighted toward the areas your CMS results flagged. Our free full-length NCLEX practice test is the closest free rehearsal, and the plan below starts on our highest-yield NCLEX topics.

1. Measure first. Take Practice A with rationales off, the way the proctored exam feels. ATI itself says practice scores are not built to predict the proctored score, so treat it as a map of what you missed, not a forecast.
2. Fix the misses, not the whole book. Work the Focused Review it builds and write out the key points for each missed topic (many schools assign “three critical points” or ATI’s Active Learning Templates). Then take Practice B with rationales on.
3. Relearn by system, then mix. Learn each weak area with short recall sessions (on NurseSavvy, the topic’s cards and cheat sheet), then answer mixed questions so you practice choosing the area, not just answering inside it.
4. Spend the last days on priority and safety. These exams are written in the NCLEX style: what do you do first, which finding do you report, what does the teaching need to correct. Our priority-question guide covers the reasoning.
5. Stop the night before. Sleep is the last study session.

Sources: ATI’s Content Mastery Series page, its 2019 RN CMS educator implementation guide, ATI’s January 2026 research release, and the ATI policies of the University at Buffalo, McCloskey School of Nursing and UNMC. Read October 24, 2026.

ATI, Content Mastery Series and Comprehensive Predictor are trademarks of Assessment Technologies Institute, LLC. HESI is a registered trademark of Elsevier. Kaplan is a trademark of Kaplan, Inc. NCLEX is a registered trademark of the National Council of State Boards of Nursing. NurseSavvy is not affiliated with or endorsed by these companies, and every NurseSavvy practice question is original.