California dental hygiene law and ethics exam

Sourced answer

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. The latest complete year the Board reports is FY2024-25: 809 of 1,163 passed, a 70% rate. The 80–89% range still quoted in older prep covers FY2018–22. The official study text is the free 2025 DHBC Laws and Regulations book.