U.S. colleges such as Boston University are using financial aid to lure rich students while shortchanging the poor, forcing those most in need to take on heavy debt, a report found. Almost two-thirds of private institutions require students from families making $30,000 or less annually to pay more than $15,000 a year, according to the report released today by the Washington-based New America Foundation. The research analyzing U.S. Education Department data for the 2010-2011 school year undercuts the claims of many wealthy colleges that financial-aid practices make their institutions affordable, said Stephen Burd, the ... (full story)