The Office of the University Registrar works with faculty and staff across Duke's schools to create courses, maintain the class schedule, and assign classrooms each term.

Have questions? Email class-scheduling@duke.edu.

Class Scheduling Timeline

Class Scheduling Timeline - Fall 2025
December 17, 2024TuesdaySchedules available in CLSS
January 17, 2025FridayCourse request deadline (submission of new courses, course changes, and special topics courses). See Trinity's Course Requests site for more information
February 12WednesdayFirst-round schedule submissions due in CLSS
February 26Wednesday

Room optimizer run, non-owned classrooms assigned

March 4TuesdaySchedules available for second-round changes in CLSS
Schedule of Classes, course synopsis, and textbook entry available to faculty and staff in DukeHub
March 19WednesdayDeadline to add 'No S/U' codes, reserve caps, and prerequisites to scheduled sections in CLSS
March 24MondayShopping carts open
Schedule of Classes available to students and public in DukeHub
April 2WednesdayRegistration begins
August 1FridayDeadline for classroom change requests due via Classroom Change Request Form
Class Scheduling Timeline - Summer 2025
October 7, 2024MondaySchedules available in CLSS
October 21MondayCourse request deadline (submission of new courses, course changes, and special topics courses)
Visit Trinity's Course Requests site for more information
TBA List of projected courses posted to assist with spring course planning
Visit Summer Session site for more information
December 18WednesdaySchedule submissions due in CLSS
January 31, 2025FridaySchedules available for changes in CLSS
Department-owned classrooms assigned
Schedule of Classes, course synopsis, and textbook entry available to staff and faculty in DukeHub
February 10MondayShopping carts open
Schedule of Classes available to students and public in DukeHub
February 17MondayRegistration begins
March 1SaturdayDeadline for classroom change requests due via Classroom Change Request Form
Class Scheduling Timeline - Spring 2025
June 14, 2024FridaySchedules available in CLSS
August 29ThursdayCourse request deadline (submission of new courses, course changes, and special topics courses). See Trinity's Course Requests site for more information
September 11WednesdayFirst-round schedule submissions due in CLSS
September 30Monday

Room optimizer run, non-owned classrooms assigned

October 1TuesdaySchedules available for second-round changes in CLSS
Schedule of Classes, course synopsis, and textbook entry available to faculty and staff in DukeHub
October 16WednesdayDeadline to add 'No S/U' codes, reserve caps, and prerequisites to scheduled sections in CLSS
October 21MondayShopping carts open
Schedule of Classes available to students and public in DukeHub
October 30WednesdayRegistration begins
December 2MondayDeadline for classroom change requests due via Classroom Change Request Form

Class Scheduling Information

Undergraduate and Graduate Course Schedule, Courses Numbered 1-699 (Update Effective Fall 2023 Term)
Period

Fall/Spring

50 Minutes, 3x/week

Fall/Spring

75 Minutes, 2x/week

Fall/Spring

150 Minutes, 1x/week

Summer

75 Minutes, M-F

Summer

125 Minutes, MTTH

18:45-9:358:30-9:45

8:30-11:00 or

8:45-11:15

8:00-9:15 
210:20-11:1010:05-11:20

10:05-12:35 or

10:20-12:50

9:30-10:45 
312:00-12:5011:45-1:00

11:45-2:15 or

12:00-2:30

11:00-12:1510:00-12:05
41:40-2:301:25-2:40

1:25-3:55 or

1:40-4:10

12:30-1:4512:30-2:35
53:20-4:103:05-4:20

3:05-5:35 or

3:20-5:50

2:00-3:152:00-4:05
64:55-5:454:40-5:55

4:40-7:10 or

4:55-7:25

3:30-4:453:30-5:35
76:30-7:206:15-7:30

6:15-8:45 or

6:30-9:00

 5:00-7:05
87:30-8:207:30-8:45

7:30-10:00

 6:00-8:05

The following constraints apply only to fall and spring terms.

Meeting Patterns
  • All classes, regardless of length, must align with the listed start and end times. Specifically, while classes may end before the listed end time, no class may end later than the noted end time.
  • 50-minute classes that meet three times per week will meet Monday, Wednesday, and Friday (MWF).
  • 75-minute classes that meet twice per week may meet Monday and Wednesday (MW), Wednesday and Friday (WF), Monday and Friday (MF), or Tuesday and Thursday (TTH).
  • 150-minute classes that meet once per week may be scheduled on any day of the week, in accordance with the constraints noted below
Distributional Constraints
  • Departments may schedule UP TO 50% of all of their classes below the 700 level during periods 2-4 ("prime time").
  • Departments may schedule UP TO 50% of their classes below the 700 level in the TTH meeting pattern.
  • AT LEAST 40% of all departmental course offerings below the 700 level must meet in some combination of two or three (or more) days per week or for two days per week in the MW, WF, or MF pattern.
    • Departments can offer any combination of three-day classes and two-day classes in the MW, WF or MF pattern in order to meet this constraint. The only stipulation is that departments must offer an equal number of MW and WF classes.
Special Circumstances
  • Departments offering six or fewer courses per semester at the 1-699 level do not have to meet any percentage constraints, but they are expected to provide a reasonable spread of courses over the day and week.
  • If departments offering ten or fewer courses at the 1-699 level in a given semester schedule at least one of those courses in the first period, they are permitted to schedule up to 65% (instead of up to 50%) of their classes in periods 2-4 ("prime time").
Further Clarifications
  • There are no percentage constraints on 700-level and above graduate classes.
  • For purposes of the percentage constraints, cross-listed courses count only for the department owning the course.
  • No TBAs for day and time may be submitted with the exception of independent studies and internships.
  • Half credit courses that stand alone, including house courses, performing arts courses, and physical activity courses, are not subject to the constraints, though departments are encouraged to provide a reasonable spread of these courses over the day and week.
  • The Office of the University Registrar reserves the right to require other schedule constraints not listed above depending on available classroom space.

Departments who wish to appeal any aspect of their course validation may do so via email to the Office of the University Registrar.

Revised December 2022

Departments use CourseLeaf Section Scheduler (or CLSS, pronounced "class") to submit scheduling requests to the Office of the University Registrar (OUR). The OUR then updates the data in DukeHub. CLSS tracks scheduling requests and checks for compliance with the Course Scheduling Policy.

CLSS URL

https://courseleaf.dukehub.duke.edu/wen/ (NetID and password required)

CLSS Access

To gain access to CLSS, submit the CLSS Access Request form.

CLSS Training Guide

Help guide: CourseLeaf Section Scheduler (CLSS)

The Higher Education Opportunity Act of 2008 (HEOA) requires all institutions receiving federal financial aid to "publish," in time for registration, a list of all required and recommended books and other course materials for all classes offered at the institution. This includes all schools—undergraduate, graduate and professional. The items we must display are:

  • Book title, including edition
  • Book author
  • ISBN number
  • Retail price

Click here for more information about this requirement.

Click here to learn how to submit course materials via eCampus.

Classroom Change Request Form - Deadlines for submission are noted on the form.

New Instructor/Advisor Request Form

OUR Access Request Form - Request access to bulletins, CLSS, Course Request, DARN Listserv, and Watermark.

SISS Access Request Form - DukeHub access is managed by the SISS Office.