Content Skip to content.
San Diego State University

I3D Header Graphic - DUS


The Interdisciplinary Studies in Three Departments (IS3D) major at San Diego State University is a special major designed for students whose career goal or academic interest is not addressed by an existing SDSU major or major/minor pattern. Because this is a custom major, students are responsible for identifying the three departments and the specific classes within those departments that they propose for their major requirements. Individualized master plans must then be approved by both the IS3D adviser and the advisers in each of the three departments. 


PLEASE NOTE: New students cannot be admitted to SDSU under the IS3D major. Instead, they must apply under a published major and attend new student orientation for the major under which they are admitted. Such students should concentrate on satisfying General Education requirements their first semester and work on having an IS3D master plan in place prior to registration for their second semester.



Click here to download the brochure or click the icon on the right.

All students interested in the IS3D major should view the 17 minute informational podcast about the major and create an initial draft of a master plan BEFORE visiting the IS3D office for walk-in advising. Links to the podcast are below.


The master plan form can be accessed using the following link:  Master Plan Form


Podcast Links:

IS3D podcast mp4

IS3D podcast mp4 for iPod and iPhone


Class Selection Guidelines by Department:

Some departments require IS3D students to follow certain guidelines when creating master plans. Students who want to use one or more of the departments below in their IS3D major should consult the relevant document(s) while drafting their master plan:


Child and Family Development


International Security and Conflict Resolution

Journalism and Media Studies



Note: documents in Portable Document Format (PDF) require Adobe Acrobat Reader 5.0 or higher to view; download Adobe Acrobat Reader.



Note: documents in Microsoft Word (.doc,.docx) require Microsoft Office: download Microsoft Office Viewer.

Advising and Support

All IS3D advising is on a walk-in basis (no appointments)


IS3D walk-in advising hours for June


Tuesday: 9:30-2:30

Wednesday: 9:30-2:30 


Thursday: 9:30-2:30


NOTE:  There will be no IS3D advising from May 16th-May 31st


Office: AD 101 (Directions


Materials to bring with you:

A draft of a master plan using the The Master Plan Form


How to prepare for your advising visit:


View the IS3D podcast mp4

View the IS3D podcast mp4 for iPod and iPhone


Requesting changes to your master plan:

Any changes to an approved master plan need to be formally requested. To add classes to your master plan, work with the department advisers using this form and submit your request to the IS3D office.


Explore National Scholarships & Fellowships


Explore internships


Email advising (include your name and Red ID)


IS3D Button Up