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</p>
<p>This is usually a school dependent definition.</p>
<p>For example, Berkeley uses the term “double major” or “dual major” to indicate two majors in the same division (e.g. College of Letters and Science, College of Engineering, or School of Business Administration). For example:</p>
<ul>
<li>Bachelor of Arts in Mathematics and Computer Science</li>
</ul>
<p>But Berkeley uses the term “simultaneous degrees” when the two majors are in different divisions. Not only does this require completing the major requirements for both majors, but it also requires completing the breadth requirements for both divisions. For example:</p>
<ul>
<li>Bachelor of Arts in Mathematics and Bachelor of Science in Business Administration</li>
</ul>
<p>Within Berkeley’s College of Engineering and College of Chemistry, there are also “joint majors”, which are like double majors or simultaneous degrees, but which officially have slightly less requirements for each major (in order to make it possible to fit the curriculum within eight semesters with at most slight overload for students without any AP or other credit on entry). For example:</p>
<ul>
<li>Bachelor of Science in Mechanical Engineering and Materials Science and Engineering</li>
<li>Bachelor of Science in Chemical and Biomolecular Engineering and Bachelor of Science in Materials Science and Engineering</li>
</ul>
<p>Of course, at any other school, the definitions may be different.</p>
<p>Taking minor in the second subject, or just a selection of courses in the second subject that you are interested in, is likely to be much easier to fit into your schedule than having more than one major.</p>