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<p>Actually, sometimes the reverse exists. At Berkeley, for example, the math and various engineering majors allow students with a 5 on AP calculus BC to skip both semesters of frosh calculus, but the largest biology majors and the business major do not (though they may allow substitution of more advanced math courses). The math department and engineering division probably realize that they get a lot of top math students who would be wasting their time retaking frosh calculus (and who have to take more advanced math courses for their majors anyway), while the biology and business departments likely attract less-strong-in-math students who would otherwise try to avoid taking any college math course (since those majors normally do not require anything beyond frosh calculus).</p>