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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 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.



Download the IS3D brochure to learn the basics of the program.

Download the IS3D checklist to get started on the process of declaring IS3D. 

All students interested in the IS3D major should view the 12 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

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


Counseling & School Psychology




Hospitality & Tourism Management 

International Security and Conflict Resolution

Journalism and Media Studies



Rhetoric & Writing Studies


Advising Calendar [click on the links to see end times]

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


New Course for Spring 2018: RWS 412

Read the description



IS3D walk-in advising hours for Fall 2017 [note the new location]

All IS3D advising is on a walk-in basis (no appointments). See the Google calendar below for walk-in advising hours (be sure to click on the links to see times).

Office: AD 101



How to prepare for your initial advising visit:


View the IS3D podcast

View the IS3D podcast mp4 for iPod and iPhone

Download an IS3D checklist 

Draft a master plan using the master plan form 


Requesting changes to your master plan:

Any changes to an approved master plan need to be formally requested and approved by the department adviser(s) and the IS3D adviser.

+To add classes to your master plan, use the ADD CLASSES form.

+To remove classes from your master plan, use the REMOVE CLASSES form.

+To change the unit distribution in your master plan, use the CHANGE UNITS form

+To change a department in your master plan, use the CHANGE DEPARTMENT form.  

+To request approval for study abroad classes, see the IS3D adviser. 


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Email Advising:

(include your name and Red ID)


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