CNA Certification and Exam Pass Rates in California
How hard is the California CNA competency exam, and what pass rates can you actually expect?
The Two-Part Competency Exam
To earn a spot on the California Nurse Aide Registry, you must pass a state-approved competency evaluation administered through vendors like Credentia and Headmaster. The test has two sections:
- Written (or oral) knowledge test: 60 multiple-choice questions covering basic nursing skills, infection control, resident rights, and safety. You can request an oral version for an additional fee if reading is a barrier.
- Manual skills demonstration: In front of a nurse evaluator, you perform five randomly selected tasks from a list of about 25. Handwashing is always evaluated and counts as one skill. You must complete all steps correctly to pass this portion.
You cannot become certified until you pass both parts. The combined written and skills fee ranges from $120 to $135, depending on the vendor and whether you choose the oral option.
What the Pass-Rate Data Shows
California’s Department of Public Health does not release a public dashboard of statewide pass rates, so precise numbers are hard to come by. However, analysis of program-reported outcomes from the 2023-2024 cycle suggests the average first-time pass rate for the full exam sits around 59%. That means roughly four out of ten candidates need at least one retake.
Individual program results vary widely. For example, Ventura College’s CNA program reported a 100% written-exam pass rate and a 79% skills pass rate for the same period. Many schools publish their own outcomes on their websites, and those that don’t are often willing to share them if you ask. When researching programs, comparing graduates’ first-time pass rates can reveal how well the curriculum aligns with the exam, and where extra hands-on practice might be needed.
Retake Policy and Fees
If you fail one or both sections, California allows up to three retakes within two years of completing your training program. You only need to retake the portion you failed, which saves money:
- Written retake only: $35–$40 (or $45–$55 for oral)
- Skills retake only: $80–$95
- Full retake (both portions): $120–$135
There is no mandatory waiting period between attempts, but most candidates benefit from a week or two of practice before re-testing. If you exhaust all three attempts or exceed the two-year window, you must re-enroll in and complete a new CNA training program to become eligibility again.
Background Check and Registry Timeline
Before you can sit for the exam, you must clear a Live Scan fingerprint-based background check through the California Department of Justice. Certain criminal convictions are disqualifying under state regulations, including elder abuse, patient theft, and serious violent offenses. If your record includes a barred offense, you can petition for an exemption through CDPH’s Aide and Technician Certification Section (ATCS), but the process adds time and is not guaranteed.
Once you pass both exam sections, CDPH typically takes 30 to 60 days to process your certification and list you on the online Nurse Aide Registry. You’ll receive a certification number that becomes your proof of eligibility to work. Most employers verify your status directly on the ATCS website, so keep your name and contact information current to avoid delays during hiring.