In the CD Format, ATS professors lecture in the "traditional classroom" style, engaging the students through direct discussion upon key elements of the course. CD courses also require additional Bible readings and will suggest additional textbook readings. In some specific courses, as noted in the course descriptions, CD courses may also require additional textbooks and readings to supplement Scripture readings and lectures. After listening to the course lectures, taking notes, reading required Scripture and other textbook materials, the student will be tested over the material through traditional styled tests, including multiple choice, short answer, and essay testing formats.