ChatGPT, a language-learning model chatbot, has garnered considerable attention for its ability to respond to users' questions. Using data from 14 countries and 186 institutions, we compare ChatGPT and student performance for 28,085 questions from accounting assessments and textbook test banks. As of January 2023, ChatGPT provides correct answers for 56.5 percent of questions and partially correct answers for an additional 9.4 percent of questions. When considering point values for questions, students significantly outperform ChatGPT with a 76.7 percent average on assessments compared to 47.5 percent for ChatGPT if no partial credit is awarded and 56.5 percent if partial credit is awarded. Still, ChatGPT performs better than the student average for 15.8 percent of assessments when we include partial credit. We provide evidence of how ChatGPT performs on different question types, accounting topics, class levels, open/closed assessments, and test bank questions. We also discuss implications for accounting education and research.

•Effective accounting data analytics require clean source data.•This case teaches students to identify dirty data using SQL queries.•This case provides an 8-step process to detect dirty data in a variety of settings.•Students adopt the role of an accountant reviewing insurance claim data.•Students using the case report increased ability to work with data.