ATI Testing: Which ATI Exam Are You Actually Facing?

If you are applying to nursing school or already enrolled, you’ve likely encountered the phrase ATI testing. ATI offers several distinct exams, ranging from the TEAS admission test that helps you gain entry, to proctored content exams each semester, and the Comprehensive Predictor near graduation. Each assessment serves a unique purpose, covers specific content, and comes with its own level of importance. In this resource, we explore these key exams in detail and explain how ATI’s proficiency scoring system works. For a comparison with another popular testing provider, check out our guide to the HESI A2.

What is ATI testing?

ATI, or Assessment Technologies Institute, is one of the most widely used standardized testing platforms in United States nursing education. Instead of relying on a single high-stakes test, ATI offers a suite of assessments that runs the length of a nursing program. Schools partner with ATI to evaluate students’ knowledge, identify strengths and gaps, and build preparation for the NCLEX.

These tools appear at every stage of your journey. Programs typically incorporate them throughout the curriculum to reinforce learning and track student progress toward licensure. Most schools require learners to complete practice assessments, followed by proctored exams and targeted remediation.

For nursing school applicants, the process often starts with the TEAS (Test of Essential Academic Skills). Once you’re enrolled, you move into proctored Content Mastery Series exams. Then, in your final semester, you take the Comprehensive Predictor. Each step builds the clinical judgment and knowledge base needed for safe and effective patient care.

Which ATI exam are you facing?

Which ATI exam you face depends on three things: your program level, whether your school has a curriculum partnership with ATI, and your current stage in the program. Applicants sit the TEAS. Enrolled students sit proctored Content Mastery Series exams at the end of major courses. Students in their final semester sit the Comprehensive Predictor. Below is a breakdown of each.

ATI TEAS

The Test of Essential Academic Skills (TEAS) serves as the gatekeeper to nursing school. Most ADN, BSN, and allied health programs require it for admission. The current version is TEAS 7, which consists of 170 total questions. For a complete breakdown of question types and scoring, read our guide to the TEAS exam.

Proctored Content Mastery exams

Once you’ve enrolled in a nursing program, ATI testing shifts focus from admission assessment to progress monitoring. Schools administer proctored exams at the end of major courses. The results help confirm that you have mastered the material before you advance to more advanced coursework or clinical rotations.

Common proctored ATI exams include:

• RN Fundamentals

• Pharmacology

• Adult Medical-Surgical

• Maternal Newborn

• Mental Health

• Pediatric Nursing

• Nutrition

• Leadership

• Community Health

These exams vary in length (usually 50–90 questions) and are scored using ATI’s proficiency level system, covered in the next section.

The Comprehensive Predictor

For many nursing students, the ATI Comprehensive Predictor is the most important standardized exam before the NCLEX. It mirrors the licensure exam experience while delivering detailed feedback on your readiness and the specific areas needing improvement. It contains 180 questions. To learn more about NCLEX content and guidance, explore our NCLEX-RN resources.

Proficiency levels: what ATI actually measures

Every Content Mastery Series exam sorts a student's score into one of three proficiency levels. Rather than a simple pass or fail, ATI uses these levels to describe how solid a student's grasp of that specific content area looks, and what kind of review they should expect to do next. The cut scores behind each level are set separately for every course exam by a panel of nurse educators.

The full breakdown of cut scores by subject, together with ATI's official definitions for each level, is published in ATI's RN 2023 CMS Proficiency Levels document.

The Comprehensive Predictor explained

The Comprehensive Predictor is the last major checkpoint before a student shifts focus to NCLEX preparation. Unlike the course-specific Content Mastery exams, it covers all major NCLEX client-need categories: Safe and Effective Care Environment, Health Promotion and Maintenance, Psychosocial Integrity, and Physiological Integrity. It returns far more than a single score.

Beyond that overall score, the exam delivers multi-layered feedback. You receive your individual score, a predicted probability of passing the NCLEX on your first attempt, comparisons to national and program averages, and detailed performance breakdowns by content topic, category, and learning outcome. That depth turns the Predictor from a simple verdict into a study tool, because it highlights exactly where to spend your remaining review time.

How the passing probability is calculated

ATI converts your Comprehensive Predictor score into a predicted NCLEX pass probability using an expectancy table derived from thousands of previous test-takers. Higher scores generally translate to probabilities well into the 90s, while lower scores drop toward single digits. Most nursing programs look for a predicted probability of 65–70% or higher. You can view the complete score-to-probability mapping in ATI’s official RN 2023 CP Expectancy Table.

Retake policies

If your first attempt falls below your program's threshold, you will likely be allowed or required to retake the Predictor. Schools commonly schedule retakes four to six weeks after the initial attempt. Use that window for targeted remediation. The score improvement between attempts often reveals whether your study approach is genuinely working.

For official educator resources and detailed Predictor information, visit ATI's Comprehensive Predictor solutions page.

Once you complete the Comprehensive Predictor, your focus shifts to the NCLEX itself. Our NCLEX-RN resources and NCLEX-PN resources include questions that mirror what to expect on test day, while our explainer on what the NCLEX actually tests is a useful refresher on the exam’s structure and format.

Frequently Asked Questions

Is ATI the same thing as HESI?

No. ATI and HESI are competing companies that each sell their own lineup of nursing exams. A program typically licenses one vendor's products for its entire curriculum, so you'll usually encounter one system consistently rather than a mix of both.

How should I prepare for ATI exams?

Start with the practice assessments, review the rationales thoroughly, then complete focused remediation on weak topics before sitting the proctored exam.

Do I have to pass every ATI exam to move forward in my program?

That depends entirely on your school's policy. ATI sets the proficiency levels and scoring, but each nursing program decides what score it requires before a student can progress, retake a course, or complete remediation.

What happens if I score Proficiency Level 1?

A Level 1 score means you cleared the minimum bar ATI's panel set for that content area, but with little room to spare. Most programs respond with a structured remediation plan focused on that specific subject rather than any kind of automatic penalty.

Can I retake the Comprehensive Predictor if I'm unhappy with my score?

Some programs allow a second attempt and some don't, since policies vary by school. Check with your nursing program directly, as ATI itself leaves this decision to the institution.

Does a low predicted probability mean I'll fail the NCLEX?

No. The predicted probability is a statistical estimate meant to guide remediation, not a certainty about your actual outcome. Plenty of students who score lower than they hoped on the Comprehensive Predictor go on to pass the NCLEX after targeted review.

Bottom line

ATI testing touches nearly every stage of a nursing student’s journey: from the TEAS entrance exam, through regular proctored assessments, to the final Comprehensive Predictor before graduation. Understanding exactly which ATI exam you are facing, and what each one truly measures, removes a major source of confusion from an already demanding process.

The TEAS helps you gain admission. The Content Mastery Series keeps you on track during your courses. The Comprehensive Predictor shows whether you are ready for the NCLEX. Because each exam uses different content, timing, and scoring logic, treating them as distinct challenges rather than one vague "ATI test" helps you study more efficiently and avoid wasted effort.

If you are still choosing a program or building your study calendar, begin by confirming exactly which ATI assessments your school requires and when they occur. That single step can give you a clear advantage over many of your peers.