No student may register in two degree programs or in two departments or faculties or two institutions concurrently without special permission granted by Graduate and Postdoctoral Studies. Students are advised that permission is never granted to attempt two full-time programs concurrently. Letters of recommendation, including details of the proportions of time that the student intends to allot to each program, must be received from the Chair of each department concerned. Each year, a progress report must be submitted from the two departments concerned to GPS before a student in this category will be permitted to register.