Course Leaf Section Scheduler (CLSS)
Course Leaf Section Scheduler (CLSS) is Northwestern’s primary academic scheduling tool. CLSS updates SES through the first week of each academic term. This gives class schedulers control of their schedules from initial planning through the end of student registration.
Useful CLSS tools
- To gain access to CLSS, please submit the SES student records security form, checking the “CLSS (class planning)” box under “Related Systems.”
- Register for upcoming CLSS training.
- CLSS Users guide
- CLSS Rules and workflow
- CLSS How to videos and documents
CLSS/CAT scheduling important dates
Spring 2021
- Monday, February 15 – Spring schedules due to Office of the Registrar. Departments must click validate in CLSS, resolve any errors, and start workflow to submit their schedules.
- Wednesday, February 17 – Final refinements due before room assignment. Room Assignment Phase begins at end of day and access to CLSS is cut off for all.
- Monday, February 22 – Room Assignments finalized.
- Monday, February 22 – Departmental access to CLSS is restored.
- Wednesday, February 24 – Schedule Live
- Wednesday, March 3– Pre-registration
- Monday, March 8 – Regular Registration
- Monday, April 5 – Final day to make changes to schedules through CLSS for Spring.
Summer 2021
- Monday, April 5 – Schedule Live
- Monday, April 12 – Regular Registration
- Friday, June 25 – Final day to make changes to schedules through CLSS for Summer.
Fall 2021
- Friday, May 21 – Fall schedules due to Office of the Registrar. Departments must click validate in CLSS, resolve any errors, and start workflow to submit their schedules.
- Wednesday, June 2 –The preliminary Fall 2021 class schedule is published to students, including course name, instructor and some meeting information. All is subject to change.
- Tuesday, July 20 – Class modalities, classroom needs and final schedule changes due. Room Assignment Phase begins at end of day and access to CLSS is cut off for all.
- Wednesday, August 4 – Room Assignments finalized.
- Wednesday, August 4 – Departmental access to CLSS is restored.
- Monday, August 9 – Additional class details, such as class modalities and room assignments, are published in the class schedule. Students can begin putting classes in their CAESAR shopping carts.
- Monday, August 16– Pre-registration
- Thursday, August 26 – Regular Registration
- Monday, September 27 – Final day to make changes to schedules through CLSS for Fall.