# California RDH law and ethics exam

Answer: The DHBC Registered Dental Hygienist (RDH) Laws and Ethics Written Examination has 60 multiple-choice items (50 scored plus 10 unscored pretest) in 90 minutes at PSI test centers, with a 75% minimum passing score under 16 CCR §1121(c). Every RDH licensure pathway — including out-of-state licensure by credential — requires it, and exam eligibility expires one year after approval.

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Answer intent ID: `california-rdh-law-ethics-exam-facts`
Cluster: California RDH and RDA exams
Last verified: 2026-07-24
Reviewer: see source page

## Direct answer

The DHBC Registered Dental Hygienist (RDH) Laws and Ethics Written Examination has 60 multiple-choice items (50 scored plus 10 unscored pretest) in 90 minutes at PSI test centers, with a 75% minimum passing score under 16 CCR §1121(c). Every RDH licensure pathway — including out-of-state licensure by credential — requires it, and exam eligibility expires one year after approval.

## Query patterns

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Source citations:
- `DHBC-RDH-CIB` DHBC/PSI RDH Laws and Ethics Written Examination Candidate Information Bulletin (January 2026). Primary. Verified 2026-07-24. <https://www.dhbc.ca.gov/formspubs/candidate_handbook.pdf>
- `CCR-16-1121` 16 CCR §1121 — DHBC supplemental written examination in California law and ethics. Primary. Verified 2026-07-24. <https://www.dhbc.ca.gov/lawsregs/new_dhbc_2025_laws_and_regulations_book.pdf>

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