This book is a comprehensive tool for students to test their understanding of the Model Rules of Professional Conduct, the Model Code of Judicial Conduct, and other doctrines of the Law of Lawyering such as malpractice, breach of fiduciary duty, and disqualification. Its 208 questions are organized to track the topics and the emphasis of the Multistate Professional Responsibility Exam (MPRE) and thus can be used productively for bar exam preparation as well as for review of material covered in a student's required professional responsibility course. The book provides detailed explanations why the right answers are correct and why the wrong answers are wrong, including citations to the rules or other authorities that the students should rely upon.