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Comparisons

NASCLA or a state trade 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

The NASCLA exam is accepted in seventeen states and is broader. A state trade exam covers one state and may be narrower and cheaper to prepare for. Some states now use the NASCLA exam as their standard route.

A genuine choice in some states and no choice at all in others, so establish which situation you are in first.

The comparison

NASCLA examA state trade exam
Accepted in17 states plus the USVIOne state
Scope12 categories, 125 questionsVaries, often narrower
Duration330 minutesUsually shorter
ReferencesAround 24 approved booksUsually fewer
PortabilityHighNone

When the NASCLA exam is clearly better

When you will license in more than one participating state, now or later. One exam against several is not close.

Also when your state has adopted it as the standard route, in which case there is no alternative to weigh.

When a state exam may suit

When you will work in one state only. That state offers its own exam, and it is narrower.

A shorter exam needs fewer references. Less preparation, less cost.

Neither covers the business and law exam

Most participating states require a separate business and law examination on their own rules. That is true whichever trade exam you sit, and it is the requirement candidates most often miss.

The reusability argument

The NASCLA reference set is broad and it is the same material you use running commercial projects. A narrower state exam may need fewer books and leave you with a thinner library. Ask the board.

Check first

Your state board publishes which routes it accepts. That answer decides the question in most cases without any weighing required.

Common questions

Should I take the NASCLA exam or a state exam?

The NASCLA exam if you will license in more than one participating state. A state exam may suit if you will only work in one and it is narrower.

Is the NASCLA exam harder?

Broader rather than harder. Twelve categories, 125 questions and around 24 references.

Do some states require the NASCLA exam?

Some have adopted it as the standard route, in which case there is no choice to make.

Does either cover business and law?

No. Most participating states require a separate business and law exam whichever trade exam you sit.

How do I find out what applies?

Your state board publishes which routes it accepts, and that usually settles it.