Course Leaf Section Scheduler (CLSS) is our powerful new system and tool that allows users to view, adjust, and report on class scheduling information, and will serve as the primary tool for class scheduling at the University of Nebraska at Omaha.
Course Leaf Section Scheduler (CLSS) Login
CLSS Training Information
CLSS Training:
- Please contact the Office of the University Registrar if you need training on using CLSS
Jump to: Spring 2026 -------- Summer 2026 -------- Fall 2026 -------- Spring 2027
Spring 2026 Schedule Building Timeline
|
Date |
Action |
|
April 1, 2025 |
Refine Mode/Plan Phase
|
|
July 28, 2025 |
Proof Phase - Primetime Meeting Pattern Compliance Review
|
|
August 18, 2025 |
Refine Mode/Room Assignment Phase
|
|
September 29, 2025 |
Refine Mode/Publish Phase
|
|
October 6, 2025 |
Refine Mode/Present Phase
|
Enrollment Dates:
Monday, October 20................................. Graduate Enrollment
Wednesday, October 22........................... Senior Enrollment
Friday, October 24.................................... Junior Enrollment
Tuesday, October 28................................ Sophomore Enrollment
Thursday, October 30.............................. Freshman Enrollment
Monday, November 3................................ Open Enrollment
Session Dates:
January 12 – May 9..................... Spring Semester
Summer 2026 Schedule Building Timeline
|
Date |
Action |
|
November 7, 2025 |
Refine Mode/Plan Phase
|
|
December 8, 2025 |
Proof Phase - Primetime Meeting Pattern Compliance Review
|
|
January 5, 2026 |
Refine Mode/Room Assignment Phase
|
|
January 26, 2026 |
Refine Mode/Publish Phase
|
|
February 2, 2026 |
Refine Mode/Present Phase
|
Enrollment Dates:
Monday, February 23................................. Graduate Enrollment
Tuesday, February 24........................... Senior Enrollment
Wednesday, February 25.................................... Junior Enrollment
Thursday, February 26................................ Sophomore Enrollment
Friday, February 27.............................. Freshman Enrollment
Monday, March 2................................ Open Enrollment
Session Dates:
May 11 - 22 ............................ Intersession
May 26 - June 26 ..................... Summer Session (1st 5 Weeks)
June 29 - July 31 ..................... Summer Session (2nd 5 Weeks)
May 26 - July 31 ...................... Summer Session (Full Summer Session)
Fall 2026 Schedule Building Timeline
|
Date |
Action |
|
November 7, 2025 |
Refine Mode/Plan Phase
|
|
December 8, 2025 |
Proof Phase - Primetime Meeting Pattern Compliance Review
|
|
January 26, 2026 |
Refine Mode/Room Assignment Phase
|
|
February 16, 2026 |
Refine Mode/Publish Phase
|
|
February 23, 2026 |
Refine Mode/Present Phase
|
Enrollment Dates:
Monday, March 23................................. Graduate Enrollment
Wednesday, March 25........................... Senior Enrollment
Friday, March 27.................................... Junior Enrollment
Tuesday, March 31................................ Sophomore Enrollment
Thursday, April 2.............................. Freshman Enrollment
Monday, April 6................................ Open Enrollment
Session Dates:
August 3 – 14 ...................................... Intersession
August 24 – December 18 ..................... Fall Session
Spring 2027 Schedule Building Timeline
|
Date |
Action |
|
April 6, 2026 |
Refine Mode/Plan Phase
|
|
July 27, 2026 |
Proof Phase - Primetime Meeting Pattern Compliance Review
|
|
August 17, 2026 |
Refine Mode/Room Assignment Phase
|
|
September 21, 2026 |
Refine Mode/Publish Phase
|
|
September 28, 2026 |
Refine Mode/Present Phase
|
Enrollment Dates:
Monday, October 19................................. Graduate Enrollment
Wednesday, October 21........................... Senior Enrollment
Friday, October 23.................................... Junior Enrollment
Tuesday, October 27................................ Sophomore Enrollment
Thursday, October 29.............................. Freshman Enrollment
Monday, November 2................................ Open Enrollment
Session Dates:
January 2 – 10 ............................ Intersession
January 11 – May 7 ..................... Spring Semester