Student Information System Register for Classes To register for classes, log in to the Student Information System. Click the register button to begin. Note: If you require assistance with the registration process, please click on the "Help" link below. SIS HELP Technical Support Office Hours Mondays to Thursdays: 8:00 am–4:30 pm Fridays: 8:30 am–12:00 pm Saturdays to Sundays: Closed Contact Students can call the toll-free number at (818) 364-7700