Faculty frequently name critical thinking as one of the most important goals for student learning. However, a key challenge to cultivating critical thinking can be the development of complex assessments. This can be especially difficult in large classes, when many tests and quizzes are in a multiple-choice format. In a recent study published in the Journal of Dental Education, a team of U-Michigan faculty investigated a new approach to mitigate these challenges. This student-centered approach to testing asks students to work in teams to design their own multiple-choice questions. One result is that students reported that it helped them on exams and enhanced their critical thinking skills.