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Double-Majoring in STS

The short answer is that STS is a great second major if you'd like to add an ethical, policy, critical thinking, social science, activist, or historical approach to a science or engineering major. The key rule is that 80% of your classes for each major must be unique, meaning, e.g., that 48 of your 60 units for the STS major cannot overlap with your other major. And you can't go over the 225-unit limit no matter what. Please contact an STS Faculty member if you are interested in pursuing this!


The following is taken from the current UC Davis General Catalog:

College of Letters and Science. Students choosing to major in multiple subjects must notify the dean’s office of their decision by submitting for approval a petition endorsed by faculty advisers in the majors. The dean’s approval of the declaration of more than one major is subject to the following conditions:

  • At least 80 percent of the upper division units used to satisfy course and unit requirements in each major selected must be unique and may not be counted toward the upper division unit requirements of any other major undertaken. Courses with substantial overlap in content will not count as part of the 80 percent.
    If the major programs differ in the number of upper division units required, the major program requiring the smaller number of units will be used to compute the minimum number of units that must be unique.
  • At the time of request, a substantial part of the preparatory subject matter and at least two upper division courses in each major must have been successfully completed.

All degree requirements must be completed within the 225-unit limit.

Combination proposals that cannot be approved are two or more majors offered by the same discipline, except art history and art studio.

A student who completes all requirements for approved multiple majors in which one major normally leads to an A.B. degree and another normally leads to a B.S. degree, will receive a B.A.S. degree. A single degree is granted to students who graduate with multiple majors


Cross-College Majors


College of Agricultural and Environmental Sciences. The College does encourage multiple majors between colleges whenever your academic interests and abilities indicate this to be the best route. After endorsement of the Change of Major petition by the appropriate faculty in the colleges involved, each dean may approve the petition if there are sufficient differences between the requirements for the major programs you wish to study. At least 80 percent of the upper division units used to satisfy course and unit requirements in each major selected must be unique and not duplicate those of the other major. In planning for multiple majors, you should determine the total requirements needed for each major as well as for graduation from each college involved.

All degree requirements must be completed within the 225-unit limit.

The same conditions apply for cross-college majors as for multiple majors. Cross-college programs will not be approved if the majors involved are available within a single college as well. For example, cross-college programs between the colleges of Letters and Science and Agricultural and Environmental Sciences will not be approved if one of the majors is biochemistry and molecular biology; biological sciences; cell biology; evolution and ecology; genetics; microbiology; neurobiology, physiology, and behavior; or plant biology.

College of Biological Sciences. The same conditions apply for cross-college multiple majors as for multiple majors within the college. In addition, approval of the deans of all involved colleges are required for cross-college multiple majors.

College of Engineering. Enrollment in a combination of an engineering major and a non-engineering major may be possible. A change of major petition must be filed in the Undergraduate Advising Office and is subject to approval. Such double-major students must satisfy the requirements for both majors. Degree requirements for such double majors ordinarily cannot be completed within four academic years.

College of Letters and Science. The same conditions apply for cross-college majors as for multiple majors. Cross-college programs will not be approved if the majors involved are available within a single college as well.

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