<p>The math requirements for econ majors vary by college, but at least three of the colleges on the OP’s list require multivariable calc. (Columbia only requires 2 semesters of calculus, but one must be multivariable. ) Moreover, whether or not math courses are required, I personally think you need to have substantial math aptitude to do well as an econ major. YMMV.</p>
<p>I may have overstated the case in saying multivariable calc is “usually” required. It is at the colleges I’m most familiar with and several of those are on his list. </p>
<p>My real point though is that if he hasn’t actually take at least AP econ he may not have that good an understanding of what econ involves. Thus, I don’t think the strength of the econ department should play a significant role in his choice of college.</p>