Rigorous exams often involve orals, which are examinations that require a student to answer questions orally in front of an examiner. Orals are usually used to assess a student's knowledge and understanding of a particular subject, and can be used as part of a larger assessment process such as a final exam. They are often seen as a more rigorous form of assessment than written exams, as they require the student to demonstrate their knowledge and understanding in a more direct way.