- CA-CO is the CDCR Correctional Officer Written Test, weighted 100% of the exam score.
- Current bulletin cycle is the May 19, 2026 exam, code WY50-9662, administered by CDCR's Office of Peace Officer Selection.
- Passing requires a score of 70 or greater; CDCR reports a 79% pass rate.
- Written-test failures may reapply after 30 days; passing places you on a list valid for 24 months.
What CA-CO Actually Is
CA-CO refers to the California Correctional Officer Written Exam administered under the California Department of Corrections and Rehabilitation (CDCR). It is the standardized written screening component that every candidate seeking a Correctional Officer position within CDCR must pass before moving forward in the hiring process. This is not a generic law enforcement aptitude test - it is built specifically around the reading, judgment, memory, and reasoning tasks that Correctional Officers perform inside California's prison system.
If you're just starting your research, it helps to understand this exam is one piece of a larger hiring pipeline. The written test is the gatekeeper step: candidates who don't clear it don't advance to the physical, background, psychological, and medical evaluations that follow. For a full breakdown of how CDCR structures eligibility around the exam, see CA-CO Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Who Administers the Exam
The exam is administered by CDCR's Office of Peace Officer Selection, the internal unit responsible for developing, scheduling, and scoring peace officer entrance exams across the department. This office publishes the official examination bulletin for each testing cycle. The bulletin currently in effect covers the May 19, 2026 Correctional Officer examination, identified by code WY50-9662.
Because CDCR periodically opens and closes the Correctional Officer application window depending on staffing needs, checking the current bulletin status before you plan your study timeline is essential. As of now, CDCR marks Correctional Officer applications as temporarily closed, which means candidates should use this window to prepare rather than assume a test date is imminently available. Track upcoming windows in CA-CO Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Written Test Format and Scoring
The CA-CO written exam has a single scored component, weighted 100%, delivered through multiple-choice and/or true/false questions. There are no separate weighted domains splitting up the score - everything you answer feeds into one overall result. A passing score is 70 or greater.
CDCR reports that 79% of participants pass the written test, and official results are emailed to candidates within two business days of testing. That turnaround is fast compared to many civil service exams, so candidates should be ready to act quickly on next steps once results arrive.
| Exam Detail | Specification |
|---|---|
| Administering Body | CDCR Office of Peace Officer Selection |
| Current Bulletin | May 19, 2026 exam, code WY50-9662 |
| Question Format | Multiple-choice and/or true/false |
| Weighting | Written Test - 100% |
| Passing Score | 70 or greater |
| Reported Pass Rate | 79% |
| Results Turnaround | Emailed within two business days |
Because there is only one scored section, some candidates assume the exam is simple. In practice, the single domain packs in a wide range of skills. For a deeper walkthrough of how that one domain breaks down internally, see CA-CO Exam Domains 2026: Complete Guide to All 1 Content Areas, and for a realistic assessment of difficulty, read How Hard Is the CA-CO Exam? Complete Difficulty Guide 2026.
What the Exam Measures
The written test is designed to measure cognitive ability, situational judgment, reading comprehension, problem solving, and decision making - all skills a Correctional Officer uses daily when managing incarcerated populations, writing reports, and responding to incidents. Within that scope, the exam draws on the following specific content areas:
Written Test (100%)
The single scored section of the CA-CO exam covers a broad set of practical skills rather than academic knowledge. Candidates should expect questions built around real correctional scenarios and workplace communication tasks.
- Grammar and spelling
- Basic arithmetic
- Names-and-faces memory
- Rapid reading and interpretation
- Communication
- Objective report writing
- Logical reasoning
- Following directions
- Disciplinary options
- Situation analysis
Two areas surprise first-time candidates the most: names-and-faces memory and objective report writing. The memory component tests your ability to recall identifying details after brief exposure - a skill directly tied to inmate accountability and security. Objective report writing tests whether you can describe an incident factually, without opinion or speculation, which is a core professional requirement for the role. Both are covered in more depth in CA-CO Study Guide 2026: How to Pass on Your First Attempt.
Key Takeaway
Because the written test is 100% of your score, there's no "weaker section" to hide behind - every content area listed above deserves dedicated review time before test day.
Eligibility to Sit for the Exam
Before you can take the CA-CO written exam, CDCR requires that applicants meet a specific set of baseline qualifications:
- Twelfth-grade equivalency (high school diploma or GED)
- At least 20 years old at the time of application, and 21 at appointment
- Legally authorized to work in the United States
- A law-abiding history
- Firearm eligibility
- Ability to pass drug screening
- Ability to pass physical fitness, background, vision, psychological, and medical components
- A valid California Class C driver license by the time of appointment
These requirements apply across the whole hiring process, not just the written test, but they matter here because CDCR won't advance a candidate to the physical, background, or psychological stages without a passing written score first. Full detail on every prerequisite is available in CA-CO Requirements 2026: Eligibility, Prerequisites & How to Qualify.
After You Pass: Academy and Pay
Passing the written test is the entry point, not the finish line. Candidates who clear all remaining components complete a 13-week Basic Correctional Officer Academy located in Galt. During the academy, trainees are paid $25.84 per hour. After graduating and being appointed, Correctional Officer pay ranges from $5,510 to $9,203 per month, depending on assignment and progression.
Understanding this pay structure early can help you decide whether pursuing the position is worth the preparation investment. For a broader financial picture, see CA-CO Salary Guide 2026: Complete Earnings Analysis and Is the CA-CO Certification Worth It? Complete ROI Analysis 2026.
Retakes, List Life, and Application Status
If you don't pass the written test on your first attempt, CDCR allows you to reapply after 30 days. That waiting period gives candidates a defined window to shore up weak areas - logical reasoning, arithmetic, or report writing, for example - before trying again.
If you do pass, your eligibility remains active on the hiring list for 24 months. That's a meaningful runway, but it's not indefinite, so candidates should track where they stand relative to hiring cycles. It's also worth noting that CDCR currently marks Correctional Officer applications as temporarily closed, which affects when new candidates can even sit for the exam. Monitoring bulletin updates is the only reliable way to know when a new testing window opens - see CA-CO Exam Dates 2026: Testing Windows, Deadlines & Scheduling for how to track that.
For candidates weighing whether the effort and waiting periods are worthwhile given the reported pass rate, CA-CO Pass Rate 2026: What the Data Shows puts the 79% figure in context.
How to Prepare Without Wasting Time
Because the written test covers ten distinct content areas under one score, a scattershot study approach tends to waste time on topics you already know while under-preparing for ones you don't. A more efficient approach is to sequence your review by content area, spending early sessions on foundational skills (grammar, arithmetic, following directions) and later sessions on scenario-based skills (situation analysis, disciplinary options, objective report writing) that require more practice reps to internalize.
Foundational Skills
- Grammar and spelling drills
- Basic arithmetic review
- Following-directions practice sets
Reading and Memory
- Rapid reading and interpretation exercises
- Names-and-faces memory drills
- Communication-based question practice
Judgment and Reasoning
- Logical reasoning practice questions
- Situation analysis scenarios
- Disciplinary options review
Integration and Timed Practice
- Objective report writing exercises
- Full-length timed practice sessions
- Review of missed question categories
Whatever schedule you follow, timed practice under realistic conditions matters more than passive review, since the exam rewards speed and accuracy together. You can build that muscle with structured practice questions on CA-CO Exam Prep's practice test platform, which mirrors the multiple-choice and true/false format you'll see on test day. A more detailed week-by-week plan is available in CA-CO Study Guide 2026: How to Pass on Your First Attempt, and a condensed reference is in CA-CO Cheat Sheet 2026: One-Page Review of Must-Know Facts.
Key Takeaway
Sequence your prep from foundational skills toward judgment-based scenarios - the latter takes more repetition to master and shows up heavily in situation analysis and disciplinary options questions.
Frequently Asked Questions
CA-CO stands for the California Correctional Officer Written Exam administered by CDCR. For a plain-language breakdown, see What Does CA-CO Stand For? and CA-CO Meaning.
CA-CO refers specifically to the written test portion of CDCR's Correctional Officer hiring process. It is not a standalone certification you can earn independently; it's one required step toward a Correctional Officer appointment. See What Is CA-CO Certification? and CA-CO Certification for more on how it fits into the hiring pipeline.
You need a score of 70 or greater on the written test. Full scoring details are covered in CA-CO Passing Score 2026: Exactly What You Need to Pass.
CDCR allows candidates who fail the written test to reapply after 30 days. If you pass, your eligibility on the hiring list lasts 24 months.
You continue through physical fitness, background, vision, psychological, and medical evaluations. Candidates who clear all components attend a 13-week Basic Correctional Officer Academy in Galt before appointment. Explore related career paths in CA-CO Jobs and CA-CO Training.
Preparing for the CA-CO written exam comes down to understanding exactly what CDCR tests, practicing under realistic timed conditions, and tracking the current bulletin so you're ready when applications reopen. Start building familiarity with the question formats now on CA-CO Exam Prep so you're not learning the test structure for the first time on exam day.