Effective Fall quarter 2004, prerequisites are those courses or conditions determined by a department or program to be necessary preparation for a course (e.g., courses, AP scores, SAT scores, student academic level). If approved by the Undergraduate Council and/or the Graduate Council, students are required to have successfully completed all of the prerequisites prior to attending the course.
Hence, it is critical that departments/programs carefully determine what preparation is necessary for a course as opposed to, perhaps, strongly recommended. Of course, faculty and departments may, on a case-by-case basis, grant exceptions to any prerequisites.