The IDP comprises two required courses. The two required courses are the Presentation Skills Course (PSC) and the Instructional Strategies Course (ISC). The PSC is a three-day, basic presentation skills course available to all employees and required of instructors. The ISC is a five-day instructor skills course available only to instructors. Class size is between eight and 15 students and is taught in a traditional classroom. Students are evaluated while providing two short presentations, a ten-minute presentation on a topic of their choice and a 15-minute presentation on a work-related topic.