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The examination, start to finish

The format of the exam

Compiled by the Sitonce editorial team from the PSI Candidate Information Bulletin, NASCLA's own published material and the federal standards named belowUpdated 2 min readFacts verified 4 September 2026
The short answer

One computer-based session of 125 multiple-choice questions over 330 minutes, with the approved reference books permitted. The appointment runs 360 minutes to cover check-in and a tutorial.

Long, and structurally simple. One session, one question type, and a table full of books.

The shape

Questions
125 administered, 115 scored
Time
330 minutes
Appointment
360 minutes
Format
Multiple choice, open book
Delivery
Computer-based at a PSI test center

Five and a half hours of testing. Plan for it physically as well as intellectually - it is longer than most people have concentrated on anything in years.

The books come with you

The approved references, tabbed with permanent index tabs and highlighted. They are checked at the door against the permitted list.

Loose notes are not permitted. Neither is anything written into a book beyond what the bulletin allows, so check the current rules rather than assuming.

Pacing

About 158 seconds a question. That is comfortable for a question you know and tight for one needing a lookup in a book you have not tabbed.

Two passes beat one

Take everything you can answer without opening a book first, marking the rest. That first pass is fast, banks a large number of marks, and tells you exactly how much time remains for the lookups.

No penalty for guessing

A wrong answer and a blank both score zero, so answer everything. With 34 wrong answers allowed there is no reason to leave anything empty.

Results

Pass or fail on screen at the end of the session, with a score report before you leave the center.

Common questions

How long is the NASCLA exam?

330 minutes of testing inside a 360-minute appointment.

How many questions?

125 administered, of which 115 are scored.

Can I bring my books?

Yes. The approved references may be brought in, tabbed and highlighted, and are checked against the permitted list.

Is there a penalty for guessing?

No. Answer every question, since a blank scores the same as a wrong answer.

When do I get my result?

On screen at the end, with a printed score report before you leave.