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California dental hygiene law and ethics exam
The RDH Laws and Ethics Written Examination is run by the Dental Hygiene Board of California through PSI: 60 items (50 scored plus 10 unscored pretest) in 90 minutes, with a 75% minimum passing score under 16 CCR §1121(c) — unlike the dentist exam, this one really does have a fixed percentage. Budget the $200 DHBC application fee plus $32.07 to PSI per sitting, and note the 1-year eligibility window. FY 2018–22 pass rates ran 80–89%. The official study text is the free 2025 DHBC Laws and Regulations book.
- Last verified
- 2026-07-22
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Source citations
- DHBC-RDH-CIB PSI Candidate Information Bulletin — RDH Laws and Ethics Written Examination (dhbc.ca.gov)
- DHBC-LAWS-2025 DHBC 2025 Laws and Regulations book (dhbc.ca.gov)