- CADC-II is a California credential administered through CCAPP Credentialing using the IC&RC ADC exam.
- The exam has 150 multiple-choice questions (125 scored, 25 unscored) in a three-hour session.
- Passing requires a scaled score of 500 on IC&RC's 200-800 range, not a raw percentage.
- Candidates need 315 hours of education, a 255-hour practicum, and 6,000 supervised hours total.
CADC-II Overview: The Basics
Certified Alcohol and Drug Counselor II, or CADC-II, is a credential issued through CCAPP Credentialing - the certifying arm of the California Consortium of Addiction Programs and Professionals. If you've searched "what is CADC-II" and landed here, the short answer is this: it's a mid-level substance use disorder counselor certification built on the IC&RC Alcohol & Drug Counselor (ADC) examination, delivered on computer at Prometric testing centers through ISO-Quality Testing (IQT).
Because the acronym CADC-II is used by more than one organization nationally, it's worth being precise about which one you're pursuing. This article - and the rest of CADC-II Exam Prep - covers the CCAPP Credentialing version exclusively, sourced directly from CCAPP's published fee schedules and the IC&RC candidate guides.
Who Issues the CADC-II and Why It Matters
CCAPP Credentialing manages the CADC-II certification pathway as part of what it calls its SUD career ladder - a tiered system of counselor credentials that increase in scope and supervised-hour requirements. CADC-II sits above entry-level counselor designations and signals that a candidate has accumulated more direct clinical hours and passed a standardized, reciprocity-friendly exam.
That reciprocity piece is significant: because CCAPP uses the IC&RC ADC exam rather than a state-only test, a CADC-II credential is built on an exam recognized across IC&RC member boards. That can matter if you ever relocate or want your credential to carry weight outside California, though the underlying CADC-II certification itself remains a CCAPP-issued credential with CCAPP's own application, renewal, and fee rules.
For a deeper breakdown of exactly what this credential entails - history, structure, and how it differs from adjacent SUD counselor tiers - see CADC-II Certification and the companion explainer What Is A CADC-II?.
Eligibility and Supervised Hours
CADC-II eligibility is not a matter of studying alone - it's a multi-year process of accumulating documented, supervised clinical experience. Before you can even schedule the exam, CCAPP requires:
- 315 hours of approved alcohol and drug education coursework
- A 255-hour supervised practicum, completed under a qualified supervisor
- 6,000 total supervised experience hours, which include the practicum hours above
- Verification documentation and signed ethics commitments from supervisors and the candidate
These numbers are large by design - CADC-II is meant to represent counselors with substantial direct client contact, not just classroom knowledge. If you're early in your career and mapping out a timeline, review CADC-II Requirements 2026: Eligibility, Prerequisites & How to Qualify for a full breakdown of how the education hours, practicum, and supervised experience hours interact and what documentation CCAPP expects.
Key Takeaway
Start logging supervised hours and practicum documentation as early as possible - the 6,000-hour requirement is the long pole in the CADC-II timeline, not the exam itself.
Exam Format and Scoring
Once eligibility is met, candidates sit for the IC&RC ADC exam through Prometric/IQT testing centers. The format is straightforward but unforgiving in its pacing:
- 150 multiple-choice questions - 125 scored, 25 unscored pretest items you can't distinguish from scored ones
- Three-hour time limit, closed-book, computer-based
- Approved photo identification and an admission letter are required at check-in
- Passing score is 500 on IC&RC's 200-800 scaled-score system - this is not a percentage, and raw-correct counts don't map directly to the scale
The scaled scoring model trips up a lot of candidates who assume they need "70% correct" or similar. If you want the full mechanics of how the 200-800 scale works and what a 500 actually represents, read CADC-II Passing Score 2026: Exactly What You Need to Pass.
If you're trying to gauge how tough this exam really is relative to your current knowledge base, How Hard Is the CADC-II Exam? Complete Difficulty Guide 2026 walks through the difficulty factors in more depth, and CADC-II Pass Rate 2026: What the Data Shows covers what's publicly known about outcomes.
The Four Exam Domains
The ADC exam blueprint, effective November 2022, organizes all 150 questions into four content domains. Understanding the weight of each domain is the single most useful thing you can do before building a study plan - it tells you where your time actually pays off.
Domain 1: Scientific Principles of Substance Use and Co-Occurring Disorders (25%)
Covers pharmacology of substances, the neurobiology of addiction, and how co-occurring mental health conditions interact with substance use disorders.
- Classes of substances and their physiological effects
- Withdrawal syndromes and risk factors
- Co-occurring disorder screening concepts
Domain 2: Evidence-Based Screening and Assessment (20%)
Focuses on selecting and applying standardized screening and assessment tools appropriately across diverse client populations.
- Matching assessment tools to presenting concerns
- Interpreting assessment results to inform level-of-care decisions
- Documentation standards for intake and assessment
Domain 3: Evidence-Based Treatment, Counseling, and Referral (30%)
The largest domain on the exam. Covers treatment planning, counseling techniques, group and individual modalities, and appropriate referral pathways.
- Treatment planning aligned to assessment findings
- Evidence-based counseling approaches and when to apply them
- Referral and continuity-of-care decisions
Domain 4: Professional, Ethical, and Legal Responsibilities (25%)
Covers confidentiality regulations, scope-of-practice boundaries, documentation requirements, and professional conduct standards.
- Confidentiality and disclosure rules specific to SUD treatment records
- Professional boundaries and dual-relationship issues
- Legal and ethical documentation obligations
Because Domain 3 alone carries nearly a third of the exam, it deserves proportionally more of your study hours than any other single area - but Domains 1 and 4, each at 25%, are close behind and can't be neglected. For a full domain-by-domain study breakdown with subtopics, see CADC-II Exam Domains 2026: Complete Guide to All 4 Content Areas.
| Domain | Weight | Approx. Scored Questions |
|---|---|---|
| Scientific Principles of Substance Use and Co-Occurring Disorders | 25% | ~31 |
| Evidence-Based Screening and Assessment | 20% | ~25 |
| Evidence-Based Treatment, Counseling, and Referral | 30% | ~38 |
| Professional, Ethical, and Legal Responsibilities | 25% | ~31 |
Fees and Renewal Costs
CADC-II costs are split into two separate payments, and the total differs significantly depending on membership status:
- Exam fee: $174 for members, $338 for non-members
- Application-review fee: $165 for members, $310 for non-members
- Combined total before training costs: $339 for members, $648 for non-members
Certification isn't a one-time expense either. Renewal occurs every two years and requires 50 continuing-education hours, including at least nine hours specifically in ethics and confidentiality. Renewal fees are $150 for members and $400 for non-members. Given the gap between member and non-member pricing, joining as a member before applying is usually the more economical route.
For a line-by-line breakdown of every cost - including how training hour costs stack on top of these certification fees - see CADC-II Certification Cost 2026: Complete Pricing Breakdown. And for what these credential costs mean against long-term career value, Is the CADC-II Certification Worth It? Complete ROI Analysis 2026 lays out the tradeoffs.
Who Hires CADC-II Counselors
CADC-II holders typically work in structured treatment environments where documented supervised experience and a standardized credential are prerequisites for employment or reimbursement eligibility. Common settings include:
- Residential and outpatient substance use disorder treatment programs
- Detoxification and medically monitored withdrawal management facilities
- County and community behavioral health agencies
- Co-occurring disorder treatment programs where SUD and mental health services overlap
- Private practice or group practice settings that bill for SUD counseling services
Employers in these settings generally value the CADC-II because it verifies both the education hours and the 6,000-hour supervised experience threshold - not just exam performance. If you're weighing career paths and compensation expectations tied to this credential, CADC-II Salary Guide 2026: Complete Earnings Analysis and CADC-II Jobs go into more detail on where demand concentrates.
Building a Domain-Aware Study Plan
Generic study advice (flashcards, spaced repetition, timed practice) only helps if it's pointed at the right material in the right proportions. Because Domain 3 (Evidence-Based Treatment, Counseling, and Referral) carries 30% of the exam, it deserves the largest single block of dedicated review time - but don't let that crowd out Domains 1 and 4, which together make up half the exam.
Domain 1 - Scientific Principles
- Review substance classifications, pharmacology, and withdrawal presentations
- Study co-occurring disorder screening concepts
Domain 2 - Screening and Assessment
- Practice matching assessment tools to client scenarios
- Review documentation standards for intake
Domain 3 - Treatment, Counseling, and Referral
- Give this the most hours - it's 30% of scored questions
- Drill treatment planning and evidence-based counseling scenarios
Domain 4 - Ethics and Legal Responsibilities
- Review confidentiality rules and scope-of-practice boundaries
- Take full-length timed practice exams under three-hour conditions
For a complete week-by-week study system built specifically around this domain weighting, see CADC-II Study Guide 2026: How to Pass on Your First Attempt. And once you've reviewed content, practicing with realistic timed questions is the best way to confirm you can perform under the actual three-hour, 150-question format.
Keep track of exact scheduling windows and application deadlines as well - CCAPP's process and IC&RC's general candidate guidance (most recently updated April 2025) both affect when you can actually sit for the exam. CADC-II Exam Dates 2026: Testing Windows, Deadlines & Scheduling covers this in detail. For a condensed, printable reference of the facts in this article, bookmark CADC-II Cheat Sheet 2026: One-Page Review of Must-Know Facts.
Frequently Asked Questions
CADC-II stands for Certified Alcohol and Drug Counselor II, a credential issued by CCAPP Credentialing using the IC&RC Alcohol & Drug Counselor exam. See What Does CADC-II Stand For? for more.
The exam has 150 multiple-choice questions total: 125 are scored and 25 are unscored pretest items, all within a three-hour time limit.
You need a scaled score of 500 on IC&RC's 200-800 range. This is not a percentage of correct answers - see CADC-II Passing Score 2026 for details on how scaling works.
Combined exam and application-review fees total $339 for members or $648 for non-members, before training-hour costs. Renewal every two years costs $150 (members) or $400 (non-members).
Candidates need 6,000 total supervised experience hours, which include a 255-hour supervised practicum, plus 315 hours of approved alcohol/drug education coursework.