Professional license and certification prep

Time to get certified!


Free online classes

Gale courses

Gale Courses logo
Gale offers free classes to help you establish your professional certification in many different fields. Go to the Gale Courses catalog and search for “certification” to see them all.


Other test prep tools

You can find additional free license preparation tools here.

Testing & Education Reference Center

Petersons Test Prep

ALERT | In holiday observance of Thanksgiving Day, all public libraries will be closed on Thursday, November 27, 2025.

ALERT | In holiday observance of Christmas Day, all public libraries will be closed on Thursday, December 25, 2025.

ALERT | In holiday observance of New Year's Day, all public libraries will be closed on Thursday, January 1, 2026.

ALERT | Support Hawaiʻi’s communities by donating canned and nonperishable food items at your local public library now through November 14.

ALERT #1 | Scheduled website maintenance will take place on Thursday, November 20, 2025, from 9:00pm to 9:30pm HST.
During this time, some online features may be temporarily unavailable.

ALERT | The Hawaii State Library's telephone lines are temporarily down. The library is open for regular public service hours.