Poor seen left out on college diversity

The most underrepresented group of Americans at the nation's top colleges and universities is not blacks or Hispanics, but students from low-income families, according to a report released last week.

Only 3 percent of the first-year students at the 146 most selective colleges and universities come from families in the bottom quarter of Americans ranked by income. About 12 percent of the students on those campuses are black or Hispanic.