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ADC practice questions - frequently asked questions

Plain answers about how ADC Exam Prep works: the exam, the questions, pricing, the free trial, and what you actually get.

No - and you should be wary of any site claiming otherwise. Every question here is original, written to mirror the style, difficulty, and judgment the real ADC exam tests. Each one comes with a plain-language explanation of why the right answer is right and the others aren't.

The ADC exam spans 4 domains: Scientific Principles of Substance Use and Co-Occurring Disorders (25% of the exam); Evidence-Based Screening and Assessment (20% of the exam); Evidence-Based Treatment, Counseling, and Referral (30% of the exam); Professional, Ethical, and Legal Responsibilities (25% of the exam). Every practice question on this site is tagged to one of these domains.

The domains are not weighted equally on the exam. By share of the marks: Evidence-Based Treatment, Counseling, and Referral 30%; Scientific Principles of Substance Use and Co-Occurring Disorders 25%; Professional, Ethical, and Legal Responsibilities 25%; Evidence-Based Screening and Assessment 20%.

The ADC exam has 150 questions and is completed in 3 hours. Our timed practice mirrors that length and pacing, so exam day feels familiar.

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