The Electrician Aptitude Test: What's On It and How to Prepare
The IBEW/NJATC aptitude test filters every union apprenticeship class — and it's beatable with the right six weeks of prep. Here's what it covers, what score you need, and the study plan that works.
What this test is really doing
The apprenticeship committee has five years and serious money to invest in every apprentice they accept, and their classroom washouts historically came from two weaknesses: algebra (the trade's daily math — Ohm's law, voltage drop, conduit fill all live there) and reading dense technical material (the code book does not meet you halfway). So the entrance exam tests exactly those two things and nothing else. No electrical questions, no tool identification — math you were taught at 14 and forgot, plus careful reading under a clock.
That's genuinely good news: both skills rebuild with practice, on a schedule, predictably.
The format
The standard Electrical Training Alliance aptitude test:
- Algebra & Functions — 33 questions, 46 minutes. Solving equations, evaluating expressions, number series/patterns, functions, basic word problems. No calculator.
- Reading Comprehension — 36 questions, 51 minutes. Workplace-flavored passages; questions on main ideas, details, and inference.
Scored 1–9; most locals interview at 4+, but slots are awarded by ranking (test + interview), so in competitive locals the practical target is 6+.
The six-week plan
Weeks 1–2: rebuild the algebra. Khan Academy (free) Algebra 1 → the topics that appear: linear equations, systems, exponents, factoring, functions, sequences. Don't skim what feels familiar — do the problem sets until they're boring. The test punishes rust, not ignorance.
Weeks 3–4: number series and timed practice. The series questions (find the pattern: 3, 7, 15, 31, ...) reward pattern drills — differences, ratios, alternating operations. Start timed practice sets now; the clock is half the test. Search for Electrical Training Alliance practice tests — several honest prep books and sites exist.
Weeks 5–6: full dress rehearsals. Complete timed tests, both sections, test conditions (no phone, one sitting, paper scratch work). After each: autopsy every miss. Reading section strategy: read the questions first, then hunt the passage — it's about efficient extraction, not literary appreciation.
Throughout: read something dense daily. Fifteen minutes of technical or news longform, asking yourself "what's the main claim, what supports it?" The reading score moves slower than math — start it day one.
Test-day mechanics
Arrive early with the required ID and paperwork; expect a proctored, quiet, no-calculator session. Answer everything — work fast on the easy ones to buy time for the hard ones, and never leave blanks (no penalty for guessing on this instrument). If nerves are your enemy, the full dress rehearsals are your medicine; the third timed practice test feels nothing like the first.
After the score
Qualifying earns the interview — which is ranked and weighted heavily, and which deserves its own preparation: show up sharp, on time, with clean answers about why the trade, why now, and how you handle physical work, early mornings, and being taught. Committees are choosing people to invest five years in; reliability beats brilliance in that room, every time. Retakes are typically allowed after a waiting period (often 6 months) if the score disappoints — but with six honest weeks of prep, most people don't need one.
📞 When to call a professional
Your local JATC office will tell you exactly which test they use, their qualifying score, and their interview weighting — call before you study. Some locals also run free or cheap prep sessions; ask.
Frequently asked questions
What's actually on the test?
The standard Electrical Training Alliance aptitude test (often called the NJATC test) has two sections: Algebra & Functions (33 questions, 46 minutes — equations, number series, functions) and Reading Comprehension (36 questions, 51 minutes — passages and questions). No electrical knowledge is tested. It's math-you-forgot plus reading-under-time.
What score do I need?
A qualifying score of 4 (out of 9) typically earns an interview — but ranking matters: apprenticeship slots go by combined test + interview ranking, so a 6 beats a 4 in a competitive local. High-demand locals effectively require above-minimum scores. Ask your local what recent accepted classes scored.
I've been out of school 10 years and algebra is gone. Realistic?
Extremely — this is the most common test-taker profile, and six weeks of steady review (5 hours/week) reliably rebuilds it. The test rewards exactly the kind of systematic practice adults are better at than teenagers. Khan Academy's algebra course plus timed practice tests is the standard winning formula.