With respect to a possible future MBA, College Transitions lists these colleges as producing the greatest percentages of graduates who go on to “top-ranked” graduate business programs:
Amherst
Bates
Claremont McKenna
Columbia
Cornell
Dartmouth
Duke
Georgetown
Hamilton
Harvard
Middlebury
Northwestern
Pomona
Stanford
UChicago
UMichigan
UPennsylvania
U Southern California
Yale
Yeshiva
As with other information, review the analysis for both methodology (available by search) and relevance to your son’s situation and preferences.
Harvard Business School, btw, offers an undergraduate business certificate through a partnership with several colleges (including Harvard College), which may be of interest as a complement to an economics degree: