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

You have questions. We have answers.
We're librarians. (It's what we do.)

Ask us a question

ALERT | In holiday observance of Martin Luther King, Jr. Day, all public libraries will be closed on Monday, January 19, 2026.

ALERT | In holiday observance of Presidents' Day, all public libraries will be closed from Saturday to Monday, February 14 to 16, 2026.

ALERT | In holiday observance of Prince Jonah Kūhiō Kalaniana‘ole Day, all public libraries will be closed on Thursday, March 26, 2026.

ALERT | The ʻAiea Public Library parking lot and access stairs from Hakina street will be closed beginning January 17 due to an unforeseen electrical issue. The Library will be open with parking on the street available. We apologize for the inconvenience as we work to resolve the issue.