Browse Classes This online class search provides a listing of the classes being taught by an academic department each semester within the new registration tool. Class Search This online class search provides a summary listing of the classes being taught by an academic department each semester. View Course Catalog This search enables users to view the course descriptions for all of the courses in the University of Notre Dame's master Course Catalog. It displays all of the active courses offered by the University but does not indicate whether a specific course is being taught in a particular semester. Therefore, this search should not be used to learn about the schedule of classes being offered in a given academic term.