How to Pass an Open-Book Contractor Exam: A Step-by-Step Study Plan

Why open-book exams are harder than they sound

Open book does not mean easy. The exams are long and the clock is tight. The NASCLA Accredited Examination for Commercial General Building Contractors has 115 scored questions plus 10 unscored pretest questions, and you get 330 minutes for all 125. You need 81 correct to pass. That works out to about 2 minutes 38 seconds per question.

Florida's Business and Finance exam has 120 questions in 6.5 hours, or about 3 minutes 15 seconds each. You need 70% to pass, and Florida does not round scores, so 69.9% fails.

Most people who fail open-book exams knew where to look in general but ran out of time. They read whole chapters looking for one number. The plan below fixes that by turning your books into a fast lookup tool.

Get the exact approved references

Start with the candidate information bulletin for your exam. It lists every book you may bring, with the edition. Bring the wrong edition and it can be turned away at check-in. Lists change when codes are updated, so download the bulletin again a few weeks before your test date.

For Florida, use DBPR's construction examination reference lists and the DBPR Candidate Information Booklet. For NASCLA, get the current PSI bulletin from NASCLA's exam page. For a state trade exam, use your board's bulletin.

Florida only allows original editions. Photocopies are not allowed without written permission. A few Florida references are listed as PDF files. Those must be printed and bound in a spiral notebook or a binder with three or more holes.

Buy the books early. Some titles take weeks to ship, and you need time to tab and practice with the same copies you will use on test day.

Tabbing and highlighting: what is allowed

The rules are strict, and breaking them can delay your check-in or cost you a book. Read your own bulletin, but the main PSI and Florida rules are below.

Florida: highlighting and underlining in pen or highlighter are allowed. Permanently attached tabs with only normal chapter or page headings are allowed. Post-it notes, pull-off labels and removable tabs are not. Florida's test is simple: if a tab can come off without damaging the page, it is removable and will not be accepted.

PSI exams, including NASCLA and many state exams: references may be highlighted, underlined and indexed with permanent tabs. They must be otherwise unmarked, so no handwritten notes, and no loose or attached extra papers. Temporary tabs such as Post-it notes must be removed before the exam will begin.

• Use permanent adhesive tabs made for books, the kind that tear the page if pulled off.
• Write only chapter names, section numbers or page topics on tabs. No formulas, answers or notes.
• Do not write in margins, even a page number or a reminder.
• Remove every sticky note and flag before you leave home.
• Pre-tabbed books from a vendor are fine only if the tabs meet your bulletin's rules.

Build a lookup system that works under pressure

Think of tabs as a map, not a list of everything in the book. Too many tabs slow you down. Aim for one tab per chapter or major section, plus a few for the tables you use most.

Color-code by book or by topic, and keep the same scheme across all your references. For example, one color for chapters, another for tables and charts. Put tabs on the side edge for chapters and the top edge for key tables so they do not overlap.

Your best index is already printed in the book. Learn each book's table of contents and index. On test day, the fastest path is often keyword, then index, then page. Practice that path until it is automatic.

Highlight with purpose. Mark numbers and limits that show up on exams: deadlines, percentages, dimensions, thresholds and definitions. Do not highlight whole paragraphs, or nothing stands out.

1. Read the exam content outline in the bulletin and note which book covers each topic.
2. Skim each book's table of contents and index before adding any tabs.
3. Tab chapters first, using the book's own chapter titles.
4. Add a small number of tabs for high-use tables, charts and formulas.
5. Do a timed drill: pick 20 topics at random and see how fast you can find each one.
6. Adjust tabs only where the drill showed a slow lookup. Remember, permanent tabs cannot be moved, so plan before you stick.

Time budgeting and the two-pass method

Divide total time by total questions to get your target pace. Plan to finish with 20 to 30 minutes left for review. On NASCLA, that means about 2 minutes per question on the first pass. On Florida Business and Finance, about 2.5 to 3 minutes.

Both PSI and Pearson VUE screens let you mark a question for review and come back to it. Use that. Florida's booklet also tells you to record an answer for every question, even ones you are unsure about. NASCLA counts correct answers, so a blank is always wrong.

1. First pass: answer every question you know or can look up in under 2 minutes.
2. If a lookup runs past 2 minutes, pick your best guess, mark it for review and move on.
3. Check your pace every 25 questions against your planned time.
4. Second pass: return to marked questions, starting with lookups you think you can find quickly.
5. Save long math and estimating problems for last, since one of them can eat 10 minutes.
6. In the final 5 minutes, make sure no question is left blank.

Calculator rules and math prep

Florida allows calculators that are silent, hand-held, battery-operated, nonprinting and without an alphabetic keypad. DBPR says solar calculators are not recommended. PSI bulletins also limit you to a silent, battery-operated, nonprinting calculator without an alphabetic keypad and do not allow programmable models. Phones and smartwatches are never allowed.

Buy the calculator you will test with now and use only that one while you study. Know how it handles order of operations, percentages and memory keys. Bring fresh batteries.

Business exams lean on payroll, markup vs margin, depreciation, ratios and interest. Trade exams lean on areas, volumes, concrete yards, board feet and slopes. If math is slow for you, drill it separately with a construction math and estimating practice test.

How to use practice exams

Practice tests are where your tabs get tested. Take them with your real books open and a timer running. A quiz you take without books teaches recall, but the exam rewards lookup speed.

For every miss, write down why: did not know the topic, could not find it, found it but misread it, or ran out of time. Each reason has a different fix. Topics you cannot find need better tabs or index practice. Misreads need slower reading of the question stem, especially words like not, except and minimum.

Score yourself against the real pass mark. Aim for 80% or higher on timed practice before test day, so you have a cushion. If you are taking NASCLA, our NASCLA Commercial General Building practice test uses the same 115-question format. For Florida, try the Business and Finance practice test.

4-week and 8-week study plans

Pick the 8-week plan if you work full time, have not tested in years, or are taking more than one exam. Pick the 4-week plan only if you can study about 10 hours a week and already know the material from the field. Plan on 5 to 6 hours a week for the 8-week plan.

Test-day checklist

Florida asks you to arrive 30 minutes before your exam. PSI asks the same for NASCLA. Late arrivals can lose their seat and their fee. The tutorial before a Florida exam can take up to 15 minutes. Florida's exam time starts when you look at the first question.

• Required ID. Florida asks for two forms of signature ID, one government-issued with a photo. Check your bulletin for the exact rule.
• Every approved reference, in the right edition, with permanent tabs only.
• An approved calculator with fresh batteries, plus a spare if allowed.
• No notes, loose papers or sticky notes inside any book.
• A sweater or jacket. Test rooms can run cold.
• Snacks and personal items go in the locker. Florida requires them in a clear bag no larger than 8 by 11 inches.
• Your pace plan: target time at question 25, 50, 75 and 100.

What to do if you fail

Failing once is common. Retake rules differ by exam, so check the board's current candidate information before you rebook.

Florida: you must pass all parts within four years of your first scheduled exam date. Within that window you can retake as often as you need, and you only retake the parts you failed. You pay the $135 Professional Testing registration fee again plus the Pearson VUE exam fee. You can also request a review of the questions you missed within 21 days of the exam. See DBPR construction exam information.

NASCLA: an approved application is good for one year and allows up to three attempts. If you do not pass within three attempts or the year runs out, you reapply as a re-applicant, and you cannot be approved until the first year has ended. The NASCLA application fee is $65. See NASCLA's exam page.

Before you retake, use your score report and your practice-test notes to find the pattern. Most second attempts are won with better tabs and better pacing, not more reading.

Frequently asked questions

Official sources

• DBPR Candidate Information Booklet, Construction Licensure Examinations
• DBPR Construction Examination Reference Lists
• DBPR Construction Examinations Information
• Professional Testing, Inc., Florida CILB Examinations
• NASCLA, Apply for NASCLA Exams
• PSI NASCLA Accredited Examination Candidate Information Bulletin

Practice tests for this license

This guide is general information, checked October 2026, not legal advice. Licensing rules change; confirm with the licensing board before you apply.