<p>most undergraduate music BA degrees are general - including some music history, some theory, and some ethnomusicology and performance.
As far as the specific discipline of music theory, many schools have composition professors or adjuncts teaching those courses - those schools include UC Berkeley, which, like most schools west of the mississippi, don’t include faculty with PhDs in music theory. Colleges with strong music theory programs include CUNY, Yale, Harvard, and Oberlin, which has a large and very strong music theory program in the conservatory, where students can double major (though the requirements for doing so are so stiff that it is rare for students to actually complete the major).</p>