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<p>The web page you cited has the answer: Brown makes it impossible to graduate early.
There is a draconian (and unique) financial requirement and several other high hurdles that have to be cleared in order to finish in less than four years. </p>
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<p>Despite the openness of the Brown Curriculum, every student has several non-negotiable obligations to fulfill prior to graduation. […requirements 1,2,3 omitted…]</p>
<p>The fourth [non-negotiable] requirement for a Brown undergraduate degree is the tuition requirement. **Students must be enrolled full-time for eight semesters (ten semesters for combined degree candidates) of instruction before they can graduate. That is, a student is responsible for tuition payments for eight or ten semesters. This rule holds true whether or not the student completes his/her academic work in fewer than eight or ten semesters. ** Approved study during the school year at another institution in the United States or abroad may also count toward this requirement.
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