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Reading for Comprehension on EEI Test Batteries
Reading appears in the CAST, POSS, MASS and SO/PD II batteries at 26 to 36 questions. What the passages are like, and the technique that saves most time.
Published · 4 min read
Reading for Comprehension appears in more EEI batteries than any section except Mechanical Concepts, and its size changes with the battery: 32 questions across four passages in 30 minutes in CAST and CAST-R, 36 across five passages in 30 minutes in POSS and MASS, and 26 across four passages in 22 minutes in SO/PD II. The pace works out at roughly 50 seconds a question everywhere — enough time to find an answer, not enough to read anything twice.
What the passages are like
These are not literary comprehension passages. They read like the documents the job actually runs on: procedures, safety bulletins, equipment descriptions, work instructions, regulatory text. They are dense with conditions ("except when", "unless", "only if"), with defined terms, and with numbers that matter.
That is deliberate, and it is a clue about what is being measured. The question is not whether you enjoyed the passage or grasped its theme. It is whether you can locate a specific fact in workplace prose and apply it exactly as written — which is precisely what goes wrong when someone misreads a switching order.
The technique that wins back time
Most candidates read the passage carefully, then read the questions, then read the passage again. That is three passes over the same text on a 50-second-per-question budget.
The alternative is a question-first scan:
- Skim the passage for about 30 seconds — enough to know its structure and where its parts live, not its content. Note where the numbers are, where any list or table sits, where the exceptions cluster.
- Read the first question and identify its target: a number, a name, a condition, a sequence, a definition.
- Go to the part of the passage where that target lives and read those two or three sentences properly.
- Answer from those sentences alone.
The discipline in step four is the whole thing. The commonest wrong answer on a reading test is not a misreading — it is a true statement that the passage does not actually make. If you know the trade, you will be tempted to answer from experience. Do not.
Question types and what they punish
- Direct retrieval. A fact stated in the passage. Fast marks; take them first.
- Conditional application. "Under what circumstances must X be done?" These hang on a single qualifying clause. Find the clause; do not summarize the paragraph.
- Inference. What must be true given the passage — not what is probably true in the real world, but what the text forces.
- Vocabulary in context. What a word means as used here, which may not be its usual meaning.
- Main idea or purpose. Usually one or two per passage. Answer these last, once the retrieval questions have shown you what the passage is about.
Watch the absolutes. Options containing "always", "never", "all" and "only" are wrong more often than they are right, because the source passages are full of exceptions. Conversely, an option hedged into meaninglessness is usually not the answer either.
How to practice it
Reading responds less to hours than any other section — you already know how to read. It responds to technique and to timing. Two things are worth doing:
- Run full passage sets against a clock, so you experience the cost of reading twice. Our Reading demo uses utility-domain passages at the real pace.
- Read the passage type outside the test. Utility safety bulletins, equipment manuals, apprenticeship agreements and switching procedures are all public, and getting comfortable with that register is worth more than another practice set.
One more thing, relevant if English is not your first language or if you read slowly: the constraint is real and you should know where you stand well before test day. Time yourself on a 30-minute set early, and if you are finishing three questions short, the fix is a pacing strategy — answer fast retrieval questions first, guess the slow ones — not reading faster.
Where it sits in the battery
Reading is usually not the section that decides a result, because most candidates do reasonably well on it. That is a reason not to lose marks there cheaply, rather than a reason to skip it. Thirty minutes is long enough for concentration to slip, particularly if Reading comes after Mechanical Concepts in your battery's order. Rehearse the whole battery at least once so the section does not arrive when you are already tired — our battery practice runs the sections in the documented order, and full access includes the timed mocks.
Frequently asked questions
How long are the passages?
EEI publishes the number of passages and questions, not passage lengths: four passages and 32 questions in CAST, five passages and 36 questions in POSS and MASS, four passages and 26 questions in SO/PD II. In practice that is roughly seven or eight questions per passage.
Can I write on the test paper?
That is an administration matter rather than an EEI rule, and proctors differ. Scratch paper is provided for some EEI tests; ask before you start rather than assuming.
Is the reading section the same in every battery?
The format is the same but the size is not: POSS and MASS use a longer version than CAST, and SO/PD II uses a shorter one with a tighter clock. The technique transfers between all of them.
What is the biggest time waster?
Reading the passage thoroughly before looking at the questions. It feels responsible, and it costs you the section.
Try the practice sections
Original questions written from the published descriptions of these batteries — for familiarization and repetition. Not real test content, not identical to any real test, and no promise about any result.
Sources
- CAST — Construction and Skilled Trades Selection System (test brochure) — Edison Electric Institute, published by LG&E and KU. Accessed September 16, 2026. EEI brochure, © 2009, self-hosted by the utility.
- POSS — Plant Operator Selection System (test brochure) — Edison Electric Institute, published by LG&E and KU. Accessed September 16, 2026. EEI brochure, © 2001, revised October 2015.
- MASS — Plant Maintenance Positions Selection System (test brochure) — Edison Electric Institute, published by LG&E and KU. Accessed September 16, 2026. EEI brochure, © 2001, updated October 2015.
- SO/PD II — System Operator / Power Dispatching Selection System (test brochure) — Edison Electric Institute, published by LG&E and KU. Accessed September 16, 2026. EEI brochure, © 2015.
- CAST-R Test Brochure, inside the Get Into Energy CAST-R student guide — Edison Electric Institute, published by Southern Company. Accessed September 16, 2026. EEI brochure © 2020; the first four pages are the brochure itself.
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