With respect to sociocultural aspects, The Official Preppy Handbook, in a chapter that described college atmospheres, listed Georgetown as a runners up in its “The College of Your Choice” category. So, Georgetown can be regarded as Preppy (the authors capitalize the term). However, and thankfully, schools of this type are sufficiently democratic as to be open to all, so elitism may not actually apply in the way in which you’ve expressed concern. In contrast, Michigan was listed as an “Out of the League” school – those characterized as “least Preppy” – seemingly because of its large size, substantial in-state enrollment and big-time sports.