Courses taken toward a master's degree should fit into a unified plan aimed at providing the student with both a comprehensive background and a depth of understanding in a major field. The number of course credits required in a major area is determined by each responsible unit. Some programs require a minor. Whether a minor area of study is required, optional, or not accepted toward a degree depends on the student's major program. In any case, the detailed course requirements are left to the judgment of the academic advisor and/or committee subject to the approval of the responsible unit administrator and the dean of the college. More than half of the credits of the total required for a master's degree must be taken in courses at the 800 and 900 levels except as specifically exempted by the dean of the college.