<p>Start by eliminating the very few schools on a Core Curriculum plan. Then eliminate the dozen or so selective schools with variations on the Open Curriculum concept. Then sweep aside a few outliers (Great Books colleges, work/study schools, Deep Springs College, etc.)</p>
<p>What are the remainders? Most colleges and universities, in fact, have “flexible (but not nonexistent) core requirements”, a.k.a. distribution requirements. Though the variations on this theme probably are nearly as numerous as the colleges themselves.</p>