Practice exam review and test-day strategy

Eight weeks before her December exam, Kari took her first full practice exam at the dining room table: a one-hour closed book set and a three-and-a-half-hour open book set, timed, in a clean copy of the 2026 NEC, with the same basic calculator she would be handed in Bismarck. She scored 64 on the closed part and 71 on the open part. Three weeks later she scored 70 and 76, and the week before the exam 78 and 82. The improvement did not come from reading more of the code. It came from studying her mistakes. This last lesson sets out the method she used: how to take a practice exam, how to review it, how to turn the review into a plan, and how to manage the clock and the book on test day. It ends with what happens after the score arrives.

The numbers in this lesson are illustrative. The board does not publish its question counts, so build your own pacing from practice sets with the board's published times: one hour closed book and three and a half hours open book for the master exam.

Taking a practice exam properly

A practice exam is useful only if it is taken the way the real exam will be. That means both parts in one sitting with a short break, the real time limits, a code book with no tabs or notes, the same basic calculator, and no looking at answers until the end. North Dakota adds a special condition: for the closed book part, nothing at all. Kari put her phone and code book in another room for the first hour.

Use practice questions written for the right edition and the right level. Questions written for the 2023 NEC can teach the wrong answer after the 2026 changes, and journeyman questions will not show the depth of a master exam. For the North Dakota law and wiring standards questions, write your own from Lessons 1 to 11 of this course, because national practice books do not cover them. The core courses in this series, MELU-101 through MELU-107, include practice questions by topic for drilling between full exams.

Reviewing every question

The review is where the learning happens, and it should take longer than the exam. Go through every question, not just the wrong ones, because a right answer reached by a lucky guess is a weakness too. For each question, find the code section or North Dakota rule that answers it, confirm the answer, and if you got it wrong or guessed, decide why. Kari sorted every miss into one of six causes.

• Did not know a North Dakota fact: a statute or rule detail, such as a deadline, fee, ratio or license scope, that had to be memorized.
• Did not know where to look: the code section was not familiar and the index search in a clean book failed or took too long.
• Found the wrong rule: the right article but the wrong section, exception or table, or missed a North Dakota amendment.
• Misread the question: missed a word such as minimum, maximum, not or except, or a detail such as the voltage or the occupancy.
• Calculation error: a wrong step, a skipped factor or a keying mistake.
• Ran out of time: never reached the question or guessed in the last minutes.

Each cause has its own fix. Missing North Dakota facts calls for more flash cards. Not knowing where to look calls for more index practice in a clean book. Finding the wrong rule calls for reading the whole section, including exceptions, and checking for an amendment in article 24.1-06. Misreading calls for slowing down on the question stem. Calculation errors call for working each calculation the same way every time and checking units. Running out of time calls for the pacing plan below.

The error log

Kari kept an error log: one line for each missed or guessed question, giving the part of the exam, the topic, the source, the cause and a one-sentence note on what she should have done. After each practice exam, she counted misses by cause and by topic. After her first exam the biggest cause was North Dakota facts, almost all in the closed part, so she spent two weeks on her flash card deck. After her second, the biggest cause was where to look in the open part, mostly in Chapters 5 and 6, so she drilled the index for those chapters.

# Error log summary after a practice exam (illustrative entries)
from collections import Counter
log = [("closed", "wiring certificates", "ND fact"), ("closed", "apprentices", "ND fact"),
       ("open", "hazardous locations", "where to look"), ("open", "load calculation", "calc error"),
       ("closed", "liens", "ND fact"), ("open", "services", "wrong rule"),
       ("open", "motors", "calc error"), ("open", "special equipment", "where to look"),
       ("closed", "contractor license", "ND fact"), ("open", "grounding", "misread")]
by_cause = Counter(cause for _, _, cause in log)
by_part = Counter(part for part, _, _ in log)
print("By cause:", ", ".join(f"{c} {n}" for c, n in by_cause.most_common()))
print("By part:", ", ".join(f"{p} {n}" for p, n in by_part.most_common()))

By cause: ND fact 4, where to look 2, calc error 2, wrong rule 1, misread 1
By part: open 6, closed 4

A study plan from the log

The log turns into a plan. Kari's eight-week plan had three phases. In weeks one to three she worked through the North Dakota material and the topics where her first practice exam showed the most misses. In weeks four to six she drilled calculations and index searches, took a second full exam, and reworked her weakest topics. In weeks seven and eight she took a final full exam, reviewed every miss, and spent the last few days only on flash cards and light review. She stopped serious studying two days before the exam and slept.

The closed book part on test day

The closed part is one hour, and its questions are quick: you know the answer or you do not. Kari's plan was one steady pass, answering every question she was sure of and marking the rest, then a second pass on the marked questions with whatever time was left. She did not change answers on the second pass unless she found a clear reason. With no reference allowed, the best preparation is the flash card deck built from Lessons 1 to 11: license classes, contracting rules, experience hours, fees and expiration dates, the apprentice ratio, wiring certificate deadlines and fees, insurance, the Secretary of State classes, lien deadlines, the reporting clocks and continuing education.

The open book part on test day

The open book part is three and a half hours with a board-supplied code book. Kari used a three-pass plan. In the first pass she answered every question she could solve in under two minutes, which was most of the definitions and straightforward look-ups, and marked the rest. In the second she worked the marked questions that needed a calculation or a longer search. In the third she made her best choice on anything left and checked that every answer was recorded. Because there is no penalty stated for a wrong answer, a blank answer is a lost point; never leave one blank at the end.

# Checking progress at the halfway point of the open book part (illustrative)
total_minutes = 210
practice_questions = 70
answered_at_half = 41
expected_at_half = practice_questions / 2
ahead = answered_at_half - expected_at_half
print(f"At {total_minutes // 2} minutes: answered {answered_at_half}, expected about {expected_at_half:.0f}")
print("On pace" if ahead >= 0 else f"Behind by {-ahead:.0f}: skip long look-ups until pass two")

At 105 minutes: answered 41, expected about 35
On pace

Working a question in a clean code book

With no tabs, every open book question starts with the topic. Kari asked herself which chapter the question belonged to before she opened the book: general rules in Chapters 1 to 4, special occupancies in 5, special equipment in 6, special conditions in 7, communications in 8 and the tables in Chapter 9. Then she went to the index with the key words from the question, checked the article's scope, found the section, and read the exceptions. If the question was about a rule North Dakota amends, such as services, overcurrent device location or grounding, she paused to ask whether the state rule changed the answer, because the exam is based on the North Dakota wiring standards too.

The night before and the morning of

The board supplies code books, calculators and pencils, so the list of things to bring is short: a government photo identification, the exam invitation or confirmation, and anything the board's instructions say to bring. Check the location and the start time the night before, plan for winter driving to Bismarck in December, and arrive early. Eat breakfast. Use the restroom before the exam starts. In the room, take a minute at the start of each part to read the instructions and check the time.

After the score arrives

The board grades the exam and reports the score. A 70 or better is a pass, and the license issues once the fee is paid. Then the master who will contract files proof of liability insurance with the board before contracting, as Lesson 8 explains, and the company updates its records. For Souris Bend that means the April 30, 2027 handover in Lesson 7: Kari's insurance certificate with the board, the e-cert account in her name, and the Secretary of State file updated.

A score below 70 is not the end. A 60 to 69 can retest with no waiting period; a 50 to 59 waits three months; 49 or below waits six months. Because the board does not review missed questions with candidates, your error log is the only record of what to fix. Write down what you remember about the exam's topics as soon as you leave the room, without trying to reconstruct questions, and build your next plan from that list and your log.