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San Diego State University

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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 three disciplines are involved, the program must have a clear focus and depth that make academic sense; the areas of study and the choice of courses within these departments must complement each other. Students are responsible for identifying the departments and classes they propose to include in their custom major. 


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

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 or Open Office; download Open Office.

Walk-In Advising Hours

Hello IS3D majors and prospective IS3D majors, please note the revised walk-in advising hours below.


There will be no IS3D advising from March 30 until April 3. Regular hours will resume on April 6th.


IS3D walk-in advising hours for the Spring 2015 Semester:


Mondays 11:30am-1:00pm

Thursdays 10:00am-11:30am


Location:  AD 101


Pre-Appointment Materials to bring with you:

The Master Plan Form



Materials to bring to your advising visit:


IS3D podcast mp4

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.


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