The PE Exam: Disciplines, Exam Day, and How It Is Scored

The Principles and Practice of Engineering exam is the step between working as an engineer and signing your own drawings. You sit it with a full-time job around it, so it pays to know exactly how the day works before you plan the months that lead up to it. This guide covers the discipline exams, test day, the references you get on screen, and how NCEES reports your result.

What the PE is, and who takes it

NCEES writes and administers the PE and describes it as "designed for engineers who have gained a minimum of four years post-college work experience" (ncees.org/exams/pe-exam, read 2026-11-01). It is usually the second exam on the way to a license: NCEES says licensure candidates "typically must pass the FE exam and the PE exam", and most states also require four years of acceptable, progressive and verifiable work experience. Eligibility is set by each licensing board, so your board approves you first, and once approved you have 12 months to take the exam.

The fee is $400, paid directly to NCEES (PE Structural is the exception: $350 for each of its four sections, a breadth and a depth section for each of its vertical and lateral components). Some boards charge their own application fee on top, and rescheduling or cancelling a Pearson appointment costs $50 and must be done at least 48 hours before it. You get one attempt per testing window and no more than three in any 12-month period, and the windows are quarterly: January to March, April to June, July to September, October to December. Some boards are stricter, so check yours.

The discipline exams, and choosing one

Pick the exam that matches the work you actually do, since the PE is written for engineers with years of practice behind them. Read the specification for your discipline on the NCEES PE exam page: it names every knowledge area with the number of questions drawn from it, as a range of questions and never a percentage, so treat a single percentage per area as somebody's arithmetic. The weights are far from even: on HVAC and Refrigeration, Equipment and Components alone is 24 to 36 of the 80 questions. HVAC and Refrigeration is also the one exam in the table that uses US Customary units only.

NCEES offers a dozen smaller PE exams, among them Control Systems, Fire Protection, Nuclear and Petroleum, on a single day once a year rather than year-round: 85 questions in a 9.5-hour appointment, with every examinee receiving the same questions. PE Structural is built differently again: a vertical and a lateral component, each sat as a separate breadth section (year-round) and depth section (twice a year).

What test day actually looks like

The appointment for each exam in the table is 9 hours: a 2-minute nondisclosure agreement, an 8-minute tutorial, 8 hours of exam time, and a 50-minute scheduled break. That is 80 questions in 480 minutes, six minutes each, and the whole clock is yours from the start, with no individually timed section. The exam is taken only at Pearson test centers.

Like the FE, it comes in two halves. NCEES's Examinee Guide says the exam "is divided into two sections": when you reach the end of the first, you are prompted to review and submit it, and after that you no longer have access to those questions. The scheduled break comes at that point and is optional, while an unscheduled break comes out of your testing time. Flag and revisit freely inside a half, never across it. Not every question counts, either: all NCEES exams include a limited number of unscored pretest items, placed at random and impossible to tell apart from the rest.

Pass, fail, and the diagnostic report

NCEES is direct: "All results are reported as pass or fail." If you do not pass, you also receive a diagnostic report showing your performance in each knowledge area. Results are typically available 7 to 10 days after the exam.

There are no deductions for wrong answers, so answer everything. Your count of correct answers is converted to a scaled score that adjusts for small differences in difficulty between exam forms, and NCEES "does not publish the passing score because it varies slightly based on difficulty." It publishes neither that scale nor the passing score, so anyone quoting you a specific PE passing score is guessing.

The tools on screen

The PE is closed book with electronic references, and you may not bring your own copies of anything. Every exam supplies the current NCEES PE Reference Handbook for its discipline as a searchable PDF, and the PE handbooks are not the FE handbook. Download yours free from your MyNCEES account and study with it open from the first week. You test on a 24-inch monitor so the question and the reference sit side by side, and you search from the box in the reference pane: NCEES states that Ctrl+F is not available.

The civil exams and Power also supply design standards, listed on the last page of each specification by edition and opened one chapter at a time. The edition matters: solutions that reference a standard "are scored based on this list and the revision year shown. Solutions based on other standards will not receive credit." NCEES has published updated standards for all five civil exams effective with the April 2027 examination, among them ASCE 7-22, IBC 2024, ACI 318-19, the AISC Steel Construction Manual 16th edition, AASHTO LRFD 10th edition, the Highway Capacity Manual 7th edition and the 11th edition of the MUTCD; the knowledge areas do not change. If your date falls near April 2027, check which list applies to the day you sit and study from that edition.

Calculators are a short list that NCEES reviews every year. Through 2027 it permits all Casio fx-115 and fx-991 models, the HP 33s and HP 35s but no other HP, and all TI-30X and TI-36X models, none of them graphing. You may bring one, and a TI-30XS is also available on screen.

The question types, including the unfamiliar ones

Most PE questions are traditional multiple choice. NCEES also uses four alternative item types: multiple correct options, point and click on a graphic, drag and drop to match, sort, rank or label, and fill in the blank with a number. Every question, alternative types included, is scored correct or incorrect with no partial credit, so on a multiple correct question, missing one of the correct options earns exactly what a blank earns.

How to prepare, honestly

• Work from the specification. It names every knowledge area and how many of the 80 questions come from it. That is your study plan, already written.
• Practice with your references open, always. On the PE the skill is finding the right equation, table or provision fast, in the edition the exam supplies. Know where things live, not only that they exist.
• Rehearse the clock and the halfway submit. Six minutes a question over eight hours is a long day, and the first half does not come back after the break.