““A series of federal surveys of selective colleges found virtually no change from the 1990s to 2012 in enrollment of students who are less well off — less than 15 percent by some measures — even though there was a huge increase over that time in the number of such students going to college. Similar studies looking at a narrower range of top wealthy universities back those findings. With race-based affirmative action losing both judicial and public support, many have urged selective colleges to shift more focus to economic diversity.””