In chemistry, Ask an Expert is an activity where the teacher chooses a student to be an "expert" on 1-3 test questions based on their performance on the questions on the test. The number of question each student is responsible for varies depending on the student's ability level and the level of difficulty of the questions. For each question that a student missed, they must consult the "expert" for the question and learn where they went wrong. Students must consult an expert and have explanations for all questions missed. In order to earn more points on their test, the student must meet with the teacher outside of class where they are quizzed by the teacher on whether or not they truly understand the content.