Where this material comes from.

Who makes this

LevlPrep is made by Olivier Testa, an EMT and UC San Diego pre-med student (About). It is an independent project, not a company and not a training program. It is not affiliated with, endorsed by, or in any way connected to the National Registry of Emergency Medical Technicians, any state EMS office, any EMS training program, or any university. Nothing here is an official practice exam, and no score on this site predicts a score on the real one.

All notes and textbook pages are free forever; interactive lessons are free in the early chapters; Premium adds unlimited practice, exams, every lesson and analytics. Every course also has a free daily practice allowance and one free exam, and Premium is a one-time pass (Free vs Premium). There are no ads. Its privacy policy lists everything it records.

The NREMT-EMT question bank

Every question is original. None is copied from the National Registry, from a textbook's test bank, or from another prep product. Each is tagged to one of the five domains of the National Registry’s EMT exam outline launched on 7 April 2025 (Scene Size-Up & Safety, Primary Assessment, Secondary Assessment, Patient Treatment & Transport, Operations), by the step of the call it tests, and the timed exam draws them in the outline’s proportions. The bank has multiple-response and build-list items; it does not simulate the exam’s drag-and-drop or options-table items.

The clinical content is written against the material every accredited EMT course teaches, which is set by the National EMS Education Standards and the EMT instructional guidelines. Where a question turns on a specific figure or sequence, the reference points are:

• CPR, AED and resuscitation: the 2025 American Heart Association Guidelines for CPR and Emergency Cardiovascular Care, including the BLS algorithms for adults, children and infants.
• Newborn care at delivery: the Neonatal Resuscitation Program (NRP), which is where the current position on drying, warming and stimulating before any suctioning comes from.
• Bleeding control: the tourniquet-first approach for life-threatening extremity bleeding, from Stop the Bleed and current prehospital trauma guidance.
• Trauma destination decisions: the 2021 National Field Triage Guideline (ACS Committee on Trauma and NAEMSP), which replaced the older four numbered steps with red and yellow criteria.
• Triage at a multi-casualty incident: the START and JumpSTART systems.
• Vital-sign ranges, drug indications and contraindications: the ranges and rules taught at the EMT level in the standard textbooks written to the Education Standards.

Protocols vary by state, region and medical director. Where they do, a question follows the national standard and the explanation says so. Your local protocol wins on the truck, and your program's material wins on your state's exam.

What has not happened: the bank is made by an EMT, but no paramedic or EMS instructor has reviewed it. The editions above are the ones it is written against, and the checks described below catch the mechanical faults — but a guideline citation is not the same thing as a credentialed reviewer, and this site does not yet have one. Until it does, treat the clinical content the way you would treat a well-read classmate's notes: useful, checkable, and not authoritative.

How the bank is checked

Beyond the writing itself, the bank passes an automated check on every change to the site, and the change is rejected if it fails:

• The keyed answer sits in no one option position more than 40% of the time, and select-all-that-apply keys don't cluster on one set. Options are also shuffled per browser, so the letter you see is yours alone.
• The longest option is the correct one no more than 32% of the time, against roughly 25% by chance, and that ceiling only ever goes down. A bank that rewards "pick the long one" teaches test-taking, not medicine.
• Every question has an explanation, and the explanation is what the study assistant and the review screen show, so a thin one is visible immediately.
• Every count the site advertises is compared against the bank itself, so the number you read is the number that exists.

What no script can check is whether an answer is clinically right. That is editorial work, and it is never finished.

The Organic Chemistry course

The course follows a standard two-semester organic chemistry sequence. The Organic Chemistry I material is structure and bonding, acids and bases, IUPAC nomenclature, conformations, stereochemistry, substitution and elimination, alkenes and alkynes, conjugation and pericyclic reactions, alcohols and ethers, and spectroscopy. The Organic Chemistry II material is carbonyl chemistry, oxidation and reduction, carboxylic acids and their derivatives, enolates, amines, aromatic chemistry, organometallics, biomolecules, polymers, and synthesis and retrosynthesis. It is written to be a learning product, not an exam-prep product: the lessons make you perform each mechanism, and the mastery score is built from what you got right, not what you opened.

• pKa values in the acid/base tool and the lessons are the widely tabulated values used in undergraduate teaching (water-scale for common acids, DMSO-scale where that is the standard reference), rounded to the precision an introductory course uses.
• Conformational energies (A-values, torsional and eclipsing costs) are the standard textbook figures.
• Spectroscopy ranges (IR regions, ¹H NMR chemical shifts) are the standard correlation-table values; the NMR predictor is a rules-based estimate, not a measured spectrum.
• The mechanism checker and reaction predictor are rules-based. They encode the textbook rules for arrow pushing, formal charge, octets and the substitution-versus-elimination decision. They are meant to catch the mistakes an introductory course cares about; they are not a substitute for a real reaction database.

The Anatomy & Physiology course

The course covers a standard two-semester college anatomy and physiology sequence. Its scope is matched to the chapters of the free Anatomy and Physiology 2e textbook by J. Gordon Betts et al. (OpenStax), to the learning outcomes that college A&P courses commonly use, and to the A&P content areas of the TEAS 7. The course is complete: all 27 chapters are published, from orientation to the body through development and inheritance. One thing has not happened yet: it has not yet been reviewed by a licensed A&P instructor.

• Written originally. Every lesson, notes page, question and explanation is written for this course. None of it is copied or paraphrased from a textbook, and a script compares the course's text against the OpenStax book to catch any borrowed wording.
• Strict order. A script checks that no page uses a term before the lesson that teaches it, unless the page marks it as a short preview.
• Current science. Where the science has moved on (for example, how fluid moves across capillary walls), the course teaches the explanation best supported by current evidence, and adds a short “For your exam” note where a course exam or the TEAS may still expect the older answer.
• Not yet reviewed by an instructor. The material follows current published sources but has not yet been reviewed by a licensed A&P instructor. Every question has a “Report a problem” link, and corrections are listed in the changelog.

Figures. Many figures come from Anatomy and Physiology 2e by J. Gordon Betts et al., OpenStax, © Rice University, licensed under CC BY 4.0. Each figure is credited under the figure itself, with a link to the page it comes from, and every one is listed on the figure credits page. Figures are resized, and on some the printed labels are covered so you can quiz yourself. The license of each figure was checked one by one: figures that credit a third party (many microscope photos do) are not used. OpenStax and Rice University do not endorse LevlPrep. All other diagrams are drawn for this course.

TEAS. The TEAS A&P practice mode spreads its questions across the twelve A&P areas ATI lists for the TEAS 7. ATI does not publish how many questions each area gets, so the split is an estimate. LevlPrep is not affiliated with, endorsed by, or connected to Assessment Technologies Institute (ATI). TEAS and ATI TEAS are trademarks of ATI, used here only to say what the material is for.

The AP® Biology course

The course follows the units and topics of the AP® Biology course framework that took effect in fall 2025, in its order, described in our own words. Every figure is drawn for this course; no textbook text or figure is reproduced. All eight units and the statistics and experimental-design skills are published.

• Written originally. All of the course (lessons, notes pages, questions, free-response questions and rubrics) is written for it. None of it reproduces released exam questions, classroom question banks or the course framework's own text.
• Checked twice. Each unit was checked for accuracy by a second reviewer who did not write it, against Biology 2e; every number was recomputed. Points where sources disagree are listed for a teacher to settle.
• Figures. Every diagram in the course so far is drawn for it.
• Not yet reviewed by an AP® Biology teacher. Every question and page has a “Report a problem” link, and corrections are listed in the changelog.

AP® is a trademark registered by the College Board, which is not affiliated with, and does not endorse, this site.

The AP® Chemistry course

The course follows the units and topics of the AP® Chemistry course framework (2024), in its order, described in our own words, with a “Math you need” chapter placed before each skill is first used. All nine units are published.

• Written originally. Lessons, notes pages, questions, free-response questions and rubrics are written for the course. None of it reproduces released exam questions or the course framework's own text; the framework, the equations and constants sheet and the College Board's scoring reports were used only for scope and for the mistakes readers report.
• Checked twice. Each unit was checked for accuracy by a second reviewer who did not write it, and every numeric answer is recomputed by code.
• Not yet reviewed by an AP® Chemistry teacher. Every question and page has a “Report a problem” link.

The AP® Physics 1 course

The course follows the eight units of the AP® Physics 1 course framework (2024-25) and every topic in them, in its order, described in our own words, with a “Math you need” chapter placed before each skill is first used. Its exams follow the May 2027 format. All eight units are published.

• Written originally. Lessons, notes pages, questions, free-response questions, rubrics and trainers are written for the course. None of it reproduces or adapts released exam questions; the framework, the equations sheet and the College Board's scoring reports were used only for scope and for the mistakes readers report.
• Checked twice. Each unit, the trainers and the practice exams were checked for accuracy by a second reviewer who did not write them, and every numeric answer is recomputed by code. Open points are listed for a teacher to settle.
• Not yet reviewed by an AP® Physics 1 teacher. Every question and page has a “Report a problem” link.

The AP® Calculus AB course

The course follows the eight units of the AP® Calculus AB course framework and every AB topic in them, in its order, described in our own words, with a “Math you need” chapter placed before each skill is first used. Its exams follow the May 2027 format. All eight units are published.

• Written originally. Lessons, notes pages, questions, free-response questions, rubrics and trainers are written for the course. None of it reproduces or adapts released exam questions; the framework and the College Board's scoring reports were used only for scope and for the mistakes readers report.
• Checked twice. Each unit, the trainers and the practice exams were checked for accuracy by a second reviewer who did not write them; every numeric answer is recomputed by code, typed expressions are graded by value at many points, and every graph is drawn from the function it shows. Open points are listed for a teacher to settle.
• Not yet reviewed by an AP® Calculus AB teacher. Every question and page has a “Report a problem” link.

The AP® Statistics course

The course follows the five units of the revised AP® Statistics course framework (first examined in May 2027) and every topic in them, in its order, described in our own words, with a “Math you need” chapter placed before each skill is first used. Topics the revision removed are not tested. Its exams follow the May 2027 format, and the formulas page holds exactly what the 2026 reference sheet gives. All five units are published.

• Written originally. Lessons, notes pages, questions, free-response questions, rubrics, the conclusion prompts and trainers are written for the course. None of it reproduces or adapts released exam questions; the framework, the reference sheet and the College Board's scoring reports were used only for scope and for the mistakes readers report.
• Checked twice. Each unit, the trainers and the practice exams were checked for accuracy by a second, independent automated (AI) review; every probability, interval and p-value is recomputed by code, an answer from a table and the same answer from a calculator are both accepted, and every plot is drawn from the data it shows. Open points are listed for a teacher to settle.
• Not yet reviewed by an AP® Statistics teacher. Every question and page has a “Report a problem” link.

The AP® Environmental Science course

The course follows the nine units of the AP® Environmental Science course framework and every topic in them, in its order, described in our own words, with a “Math you need” chapter placed before each skill is first used. Its exams follow the May 2027 format. There is no official formula sheet, so the formulas page lists the ones the exam expects you to know. All nine units are published.

• Written originally. Lessons, notes pages, questions, free-response questions, rubrics, the “Make it specific” prompts and trainers are written for the course. None of it reproduces or adapts released exam questions; the framework and the College Board's scoring reports were used only for scope and for the mistakes readers report. Data in questions is either invented for practice and said to be, or taken from a public agency source named on the page.
• Checked twice. Each unit, the trainers and the practice exams were checked for accuracy by a second, independent automated (AI) review; every calculation answer is recomputed by code from its setup, units are checked however you type them, and every data figure is drawn from the numbers it shows. Open points are listed for a teacher to settle.
• Not yet reviewed by an AP® Environmental Science teacher. Every question and page has a “Report a problem” link.

The AP® Psychology course

The course follows the five units of the AP® Psychology course framework and every topic in them, in its order, described in our own words, with a “Research skills you need” chapter placed before each skill is first used. Its exams follow the May 2027 format, with the article analysis and evidence-based questions. All five units are published.

• Written originally. Lessons, notes pages, questions, free-response questions, rubrics, the “Make it specific” prompts and trainers are written for the course. None of it reproduces or adapts released exam questions; the framework and the College Board's scoring reports were used only for scope and for the mistakes readers report. A study in a question is either invented for practice and said to be, or a real published study named by its authors and year.
• Current science. Disorders follow the DSM-5-TR, classic studies say honestly how well they have replicated, and common myths (learning styles, “left-brained” people, the 10% brain) are taught only as myths. Mental-health topics are taught as science, not for self-diagnosis.
• Checked twice. Each unit, the trainers and the practice exams were checked for accuracy by a second, independent automated (AI) review; every statistic is recomputed by code and every data figure is drawn from the numbers it shows. Open points are listed for a teacher to settle.
• Not yet reviewed by an AP® Psychology teacher. Every question and page has a “Report a problem” link.

AP® is a trademark registered by the College Board, which is not affiliated with, and does not endorse, this site.

The study assistant

The study assistant in the corner of each course page answers first by quoting the site's own material: the reference pages and explanations for NREMT, the textbook sections for Organic Chemistry, and the notes pages and glossary for Anatomy & Physiology. For signed-in students it also asks an AI model, which is given the same passages and asked to write from them; the privacy page says exactly what is sent. It can still be wrong. Treat it as a fast way to find the passage, and read the passage.

When something is wrong

No bank of two thousand questions is free of mistakes, and no script can check whether an answer is clinically right. When a key or an explanation is corrected, the change is listed on What’s new with the date, so you can see what moved since you last studied. Where a question and your program's material disagree, your program's material wins on your state's exam.

Telling us

Under every explanation — in the results list after an exam, on the back of a flashcard, and after each Organic Chemistry question — there is a Report a problem link. It takes one tap: pick what’s wrong from five options, add a sentence if you want to, send. You do not need an account and nothing about you is recorded with it.

That is the fastest route and the one worth using, because it arrives already knowing which question you meant. If you would rather write, or the problem is with something that isn’t a question, the address is at the bottom of the privacy page.