- The KNAT has four domains: Reading (24%), Math (31%), Writing (23%), and Science (22%).
- Math is the largest section with 28 of 91 questions in 45 minutes, covering conversions, ratios, and word problems.
- Science is the only domain testing nursing-adjacent content, focused entirely on human physiology and electrolytes.
- Scores are reported immediately as a percentage per section plus a cumulative score - no waiting period for results.
KNAT Domain Overview: How the 91 Questions Break Down
The Kaplan Nursing School Admission Test (KNAT) is built as four separately timed sections rather than one continuous exam. Across a total of 165 minutes, candidates answer 91 online multiple-choice questions, and the clock for each section resets independently - you cannot borrow time from one domain to finish another. Understanding how the content is weighted is the single most useful thing you can do before you start reviewing material, because it tells you exactly where to spend your limited prep hours.
The four domains and their approximate weight of the total question count are:
- Reading - 24% (22 questions, 45 minutes)
- Math - 31% (28 questions, 45 minutes)
- Writing - 23% (21 questions, 45 minutes)
- Science - 22% (20 questions, 30 minutes)
Notice that Math carries the most weight and Science carries the tightest time-per-question ratio (30 minutes for 20 questions, or about 90 seconds each). For a full breakdown of how these percentages translate into a study plan, see the KNAT Study Guide 2026: How to Pass on Your First Attempt, and for a domain-by-domain difficulty comparison, check How Hard Is the KNAT Exam? Complete Difficulty Guide 2026.
Domain 1: Reading (24%)
The Reading domain measures general academic reading comprehension - not nursing terminology. Expect short passages followed by questions that test your ability to identify main ideas, distinguish supporting details, draw logical inferences, and interpret the author's purpose or tone. Because this is an academic-readiness measure rather than a clinical knowledge check, the passages could cover almost any subject matter.
Reading: What to Practice
With 22 questions in 45 minutes, you have just over two minutes per question, including reading time. Efficient reading strategy matters as much as comprehension skill.
- Skim for structure before reading for detail
- Practice identifying the "best" answer among several plausible ones
- Time yourself on passage-and-question sets, not isolated questions
- Watch for questions that ask you to infer rather than recall
Domain 2: Math (31%)
Math is the largest domain on the KNAT, with 28 of the 91 total questions packed into 45 minutes - roughly 96 seconds per question. This section covers a wide span of arithmetic and applied math skills that nursing programs consider essential for future dosage calculations, even though the KNAT itself does not test clinical dosage math directly.
Math: Core Topic List
Because this is the highest-weighted domain, mastery here has an outsized effect on your cumulative score.
- Unit conversions (metric and standard)
- Basic operations: addition, subtraction, multiplication, division with whole numbers, decimals, and fractions
- Advanced operations and order of operations
- Ratios and proportions
- Percentages, including percent increase/decrease
- Word problems presented as equations or applied real-world scenarios
Since the on-screen calculator is built into the test interface, spend some practice time getting comfortable with an on-screen number pad rather than a physical calculator - the interaction is slightly different and can cost you seconds under time pressure if it's unfamiliar on test day.
Key Takeaway
Because Math represents 31% of the exam - more than any other domain - candidates aiming for a strong cumulative score should allocate proportionally more review time to unit conversions, ratios, and multi-step word problems than to any single other domain.
Domain 3: Writing (23%)
The Writing domain, with 21 questions in 45 minutes, evaluates standard written English mechanics rather than asking you to compose an essay. Expect multiple-choice items on grammar, sentence structure, punctuation, and usage - the kind of editing-style questions where you identify the correct or best version of a sentence or spot the error in a passage.
Writing: What to Practice
This is a mechanics-focused section, so rules-based review pays off more than open-ended writing practice.
- Subject-verb agreement and pronoun consistency
- Correct punctuation usage (commas, semicolons, apostrophes)
- Sentence structure: run-ons, fragments, parallelism
- Word choice and commonly confused words
Domain 4: Science (22%)
Science is the one domain that departs from general academic readiness and tests specific content knowledge: human physiology. With 20 questions in only 30 minutes - the tightest pacing of any section, at roughly 90 seconds per question - this domain rewards candidates who have reviewed core body systems recently, whether from a prior anatomy and physiology course or dedicated review.
Science: Systems Covered
The Science section is specifically physiology-focused, spanning the following systems and concepts:
- Cardiovascular system
- Renal system
- Hematological system
- Gastrointestinal system
- Respiratory system
- Immune system
- Sensory system
- Neurological system
- Electrolytes and homeostasis
If your prerequisite anatomy and physiology coursework is more than a semester or two behind you, this is the domain most likely to need a refresher rather than pure test-taking strategy. Because some programs restrict KNAT testing to applicants in their final semester of prerequisite coursework, many candidates take the exam while physiology content is still relatively fresh - check your program's specific eligibility rules in KNAT Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Section Timing and Pacing Strategy
Because each of the four domains is separately timed and totals 165 minutes across the full exam, pacing strategy has to be built domain-by-domain rather than as one blended approach. A table helps make the time-pressure differences concrete:
| Domain | Questions | Time | Approx. Seconds per Question |
|---|---|---|---|
| Reading | 22 | 45 minutes | ~123 seconds |
| Math | 28 | 45 minutes | ~96 seconds |
| Writing | 21 | 45 minutes | ~129 seconds |
| Science | 20 | 30 minutes | ~90 seconds |
Science and Math give you the least breathing room per question, which is another reason those two domains deserve extra timed practice rather than just content review. If you're still calibrating how difficult the exam feels overall relative to its time pressure, How Hard Is the KNAT Exam? Complete Difficulty Guide 2026 walks through this in more depth, and KNAT Passing Score 2026: Exactly What You Need to Pass explains how cumulative and section scores are calculated.
Scheduling Study Weeks Around Domain Weight
A generic weekly study template rarely fits the KNAT well, because the four domains are not equal in either weight or time pressure. Instead of splitting your prep evenly into quarters, weight your schedule the way the exam is weighted: heaviest on Math, moderate on Reading and Writing, and concentrated on Science physiology systems rather than broad science review.
Math Foundations
- Drill unit conversions, ratios, and percentages daily
- Practice on-screen calculator use for multi-step word problems
Science Physiology Review
- Work through cardiovascular, renal, and respiratory systems
- Review electrolytes and homeostasis concepts under timed conditions
Reading and Writing Mechanics
- Time full passage-and-question sets for Reading
- Drill grammar, punctuation, and sentence-structure rules for Writing
Full Timed Simulation
- Take a complete 165-minute practice run split by section
- Review missed items by domain, prioritizing Math and Science gaps
For a more detailed week-by-week plan, including how to layer in practice tests, see the KNAT Study Guide 2026: How to Pass on Your First Attempt. You can also build timed familiarity using full-length practice exams on our KNAT practice test platform before your official test date.
Registration, Fees, and Retake Mechanics by Program
Because the KNAT is administered directly by individual nursing programs rather than through a centralized commercial test network, the logistics around fees, cutoffs, and retakes vary from school to school. This matters for how you plan your domain review, since knowing your program's specific passing threshold changes how much margin you need above minimum performance.
- Documented exam fees include $25 at Clayton State University, $50 at the University of Southern Mississippi and Jackson College, and $70 at Delgado Community College.
- Published cutoffs include 62% at Jackson College's AAS-N program and 65% at MSU Billings City College.
- Common retake policies allow one or two attempts per application period with a minimum 30-day wait between attempts.
- Score validity ranges from six months to three years, depending on the program.
Because your admitting program sets the actual passing bar, it's worth reading KNAT Passing Score 2026: Exactly What You Need to Pass alongside your school's published requirements. For a broader look at what the fee ranges and score data mean in context, see KNAT Certification Cost 2026: Complete Pricing Breakdown and KNAT Pass Rate 2026: What the Data Shows. There are no formal prerequisites for taking the KNAT beyond your nursing program's own application requirements, though some programs limit testing to students in their final semester of prerequisite coursework - details covered in KNAT Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Key Takeaway
Always confirm your specific program's fee, cutoff score, retake wait period, and score validity window before testing - these are set by the school, not by Kaplan, and they directly affect how you should approach borderline domain scores.
Once you understand how the four domains are weighted and how your program scores and validates results, the remaining work is disciplined, timed practice. You can run full-length, section-timed simulations through our KNAT practice platform to build the pacing instincts each domain demands - especially the tighter 90-second-per-question rhythm of Science and the calculator-driven speed Math requires.
FAQ
Math is the largest domain, with 28 of the 91 total questions, worth roughly 31% of the exam, administered in a separately timed 45-minute section.
Mostly no. Reading, Math, and Writing measure general academic readiness. Science is the exception - it specifically tests human physiology across systems like cardiovascular, renal, respiratory, and neurological, plus electrolytes and homeostasis.
Generally no. The KNAT includes a built-in on-screen calculator for the Math section, and candidates are typically not permitted to bring their own calculator into the testing room.
Results are returned immediately after testing, showing a percentage score for each of the four domains plus a cumulative score.
No. Each program sets its own cutoff - for example, 62% at Jackson College's AAS-N program versus 65% at MSU Billings City College - so you should confirm the exact benchmark with your admitting school.