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Practice and exam technique

Timing 125 questions in 330 minutes

Compiled by the Sitonce editorial team from the PSI Candidate Information Bulletin, NASCLA's own published material and the federal standards named belowUpdated 3 min readFacts verified 4 September 2026
The short answer

You have about 158 seconds a question. Take a first pass on everything answerable without a book, then work the lookups with a known amount of time remaining.

Five and a half hours sounds like plenty until you spend four minutes on a lookup.

The arithmetic

330 minutes across 125 questions is about 158 seconds each. Comfortable on average and useless as a plan, because the variance is enormous.

Question typeRealistic time
Answerable from knowledge20 to 40 seconds
Lookup in a well-tabbed book45 to 90 seconds
Lookup in an untabbed book3 to 5 minutes
Calculation2 to 4 minutes

How that compares with other licensing exams

The NASCLA paper gives more time per question than any other exam in this catalog, and candidates still run out.

ExaminationQuestionsMinutesMinutes per question
PTCB PTCE901101.22
HKSI LE Paper 160901.5
Certified Food Protection Manager801201.5
SAFE MLO Test1201901.58
FTCE General Knowledge951952.05
CFP Exam1703602.12
NASCLA Commercial General Building1253302.64

Each row is that awarding body’s own published question count divided by its own published time limit. Questions administered, not scored, because unscored items take time too.

At 2.64 minutes a question it is more than twice as generous as the tightest paper on the list. That is not a small margin.

Which is the strongest argument for tabbing that exists

Every other exam here is closed book, so its clock buys thinking time. NASCLA’s clock buys searching time, and searching is unbounded. A tabbed reference turns a three-minute hunt into a twenty-second lookup, and the difference between a candidate who tabbed and one who did not is the difference between the most generous clock in the catalog and not enough time.

Read the table the other way round and it becomes a warning: the awarding body gave you that much time because it expects you to need it.

The two-pass strategy

First pass: answer everything you know without opening anything. Mark the rest and keep moving.

A typical prepared candidate answers 50 to 70 questions in that pass, in perhaps 40 minutes. You then know exactly how many lookups remain and how many minutes each can have.

That knowledge is the whole benefit

Working in order, you discover at question 90 that you are in trouble. Two passes, you know at minute 40 precisely where you stand, and you can decide which lookups to attempt rather than finding out by running out.

Checkpoints

End of first pass by minute 50. Two thirds of the lookups done by minute 240. Everything answered by minute 320, leaving ten minutes to fill blanks.

Triage the lookups

Not all are equal. A question you know is in a book you have tabbed well is worth attempting. One you have no idea where to find, in a category worth three questions, is worth a guess and a move on. Fill every blank.

With 34 wrong answers available you can afford to abandon a handful. What you cannot afford is spending five minutes each discovering that.

Answer everything

No penalty for a wrong answer. Any question left blank when time runs out is a mark given away.

Common questions

How much time per question on the NASCLA exam?

About 158 seconds on average, though lookups take far longer than questions you know.

What is the two-pass strategy?

Answer everything you know without opening a book first, then work the lookups knowing exactly how much time remains.

How many questions can I answer without a lookup?

A prepared candidate typically manages 50 to 70 in the first pass, in around 40 minutes.

Should I attempt every lookup?

No. Triage them. With 34 wrong answers available you can abandon a few in small categories rather than spending five minutes each.

What if I run out of time?

Fill every blank before the clock stops. There is no penalty for a wrong answer.