What Is PE-A&BE?

What the PE-A&BE Exam Actually Is

PE-A&BE stands for the Principles and Practice of Engineering examination in Agricultural and Biological Engineering. It is the licensing exam that engineers in this discipline take as the capstone step toward becoming a Professional Engineer (PE). It is not a vendor certification, a trade-association badge, or a general engineering test. It is the discipline-specific PE exam written and administered by NCEES for agricultural and biological engineers.

If you have seen the same acronym attached to other credentials, set those aside. Everything on this page concerns only the NCEES PE Agricultural and Biological Engineering exam. For other phrasings of the same question, see our explainers on what PE-A&BE stands for and the PE-A&BE meaning.

The exam is aimed at engineers who already have meaningful practice behind them. NCEES describes it as designed for engineers with at least four years of post-college experience. That is a description of the intended candidate, not a universal admission rule; your state or territorial licensing board decides who may sit. Our guide to PE-A&BE requirements and eligibility walks through how to qualify.

Who Runs It and How the Exam Is Delivered

Two organizations matter when you plan your attempt, and they do different jobs:

• NCEES (National Council of Examiners for Engineering and Surveying) writes and administers the exam, publishes the specifications, sets the competency standard and reports results.
• Pearson VUE is the testing provider. You sit the exam in person at a Pearson VUE computer-based testing center.
• Your licensing board is a third party that controls approval and registration. NCEES does not issue the license itself.

Format: 85 Questions, Eight and a Half Hours

The PE-A&BE exam is a computer-based test given in person once per year. The next published sitting is October 28, 2026. Because it is offered annually rather than in rolling windows, the calendar matters far more here than for exams you can retake on short notice. See PE-A&BE exam dates and scheduling for the scheduling details.

Question types

Expect multiple-choice items alongside alternative item types. NCEES also includes an undisclosed number of unscored pretest items in the exam. You cannot tell which items those are, so treat every question as if it counts. The exact scored and unscored split is not published, and any specific figure you see quoted elsewhere should be treated with suspicion.

Because there is no deduction for wrong answers, there is no reason to leave an item blank. Mark your best judgment and move on. For a realistic read on the workload this implies, see how hard the PE-A&BE exam is.

The Five Official Topic Areas

NCEES organizes the exam into five topic headings and publishes question ranges rather than percentage weights. The ranges below come from the current specifications (content effective October 1, 2023, with the standards list effective October 1, 2025). Subsidiary knowledge areas listed under each heading are neither exclusive nor exhaustive, so the specifications are a guide to emphasis, not a complete syllabus.

Because these are ranges, no single percentage can be read off honestly. What the ranges do tell you is relative emphasis: Common System Applications has the largest allocation, and the other four areas overlap with one another in their upper and lower bounds. A full walkthrough lives in our guide to all five PE-A&BE content areas.

Concrete Skills the Exam Rewards

The five headings are the official structure, but the practical question for a candidate is what kind of thinking each one demands. Without inventing a syllabus beyond the specifications, you can reason about the exam from its design:

• Breadth with working depth. With five topic areas and a discipline as wide as agricultural and biological engineering, you rarely get to live in one specialty. Most candidates are deep in one or two areas and must build competent working knowledge in the rest.
• Unit fluency. Both SI and U.S. customary units are used. Practical fluency in moving between them under time pressure is a skill in its own right.
• Standards literacy. The exam draws on a defined list of standards. Knowing what a standard governs and where to find the relevant provision matters more than memorizing text.
• Judgment over recall. A closed-book format with supplied reference material shifts the emphasis from remembering formulas to selecting the right method and applying it correctly.

References, Standards and Calculator Rules

This is a closed-book examination. You may use only the supplied searchable electronic reference material and the specified standards, not personal reference copies. That changes how you prepare: your goal is to become fast at searching and navigating the official reference, not to assemble a private binder.

• Standards govern scoring. The listed standard revisions are the ones used to score the exam, even when newer editions exist. Do not study from a newer edition and assume it matches.
• One NCEES-approved calculator is permitted. Confirm your model against the NCEES approved list well before test day.
• Units. Both SI and U.S. customary units appear, so practice with each.

A quick-reference refresher can help consolidate your notes, though it cannot replace the official reference you will actually use. Our PE-A&BE cheat sheet is useful for review, but it is not a permitted exam aid.

Registration, Fees and Scheduling

The NCEES examination fee is $400 per attempt. Licensing-board application costs may be separate and vary by board, so budget for both. Because the exam runs once a year, a missed deadline or a failed attempt can mean a long wait, which raises the real cost of an unprepared sitting. For a full breakdown, see PE-A&BE certification cost.

A sensible order of operations

1. Confirm your licensing board's eligibility and approval requirements.
2. Complete the board's application and registration process.
3. Register with NCEES and schedule your seat with Pearson VUE for the October 28, 2026 sitting, if that is your target.
4. Plan your calculator, reference-material practice and test-day logistics around the nine-hour-thirty-minute appointment.

Official and association resources

NCEES sells an optional official PE Agricultural and Biological Engineering Practice Exam e-book for $59.95 (copyright 2023), containing 85 practice questions with solutions. ASABE also maintains a PE Exam Resources page offering preparation guidance, member mentoring and conditional incentives that carry application deadlines. These resources do not replace the NCEES specifications, and ASABE incentives do not establish automatic reimbursement eligibility, so read the conditions before relying on them.

Scoring and the Published Pass-Rate Data

NCEES does not publish a fixed passing score and does not impose a predetermined pass rate. Instead, pass/fail rests on a psychometrically established scaled competency standard. In plain terms, you are measured against a defined level of minimum competence rather than against other candidates. Our page on the PE-A&BE passing score covers what this means in practice.

The official pass-rate table, updated January 2026, reports 91% for 33 first-time examinees and 100% for one repeat examinee. Treat these carefully: the cohorts are very small, the repeat figure rests on a single person, and they are not results of the forthcoming October 2026 sitting. Small-sample figures swing widely from year to year and say little about your odds. For a fuller discussion, read what the PE-A&BE pass-rate data shows.

Licensure and Where the Credential Is Used

Passing the exam is one step in becoming a licensed Professional Engineer; it is not a standalone national certification. PE licenses and continuing-education maintenance are administered by licensing boards, not as a separately renewable national NCEES certification. The Bureau of Labor Statistics' Agricultural Engineers profile in the Occupational Outlook Handbook provides licensing context for the profession.

Employers that value the PE in this discipline typically sit where engineering design meets agriculture, food, biological materials and the environment: consulting and design firms, equipment and machinery manufacturers, food and bioprocessing operations, water and natural-resource agencies, and universities and extension programs. A PE license can matter most where an engineer must sign and seal plans or carry public-facing responsibility. To weigh it against your own goals, see whether the PE-A&BE is worth it, our salary guide and a look at PE-A&BE jobs.

Sequencing Your Preparation Around the Five Areas

Generic study advice matters less than ordering your effort by the exam's own structure. One sensible way to sequence the work, built on the question ranges, is below. Adjust it to your background; an engineer from a machinery job will need a different split than one from a water-resources role.

For a fuller plan, see our PE-A&BE study guide, and when you are ready to test yourself, try the PE-A&BE practice tests. Our overview of PE-A&BE training covers course and mentoring options.

Frequently Asked Questions