The Wall Street Journal reports that graduates from Ivy League universities have higher starting salaries and better earnings expectations over their careers than other graduates.  Dartmouth College graduates have the highest median salary, at $134,000. The article mentions that this may have something to do with the kinds of jobs Ivy League graduates tend to take:

One reason why Ivy Leaguers outpace their peers may be that they tend to choose roles where they're either managing or providing advice, says David Wise, a senior consultant at Hay Group Inc., a global management-consulting firm based in Philadelphia. By contrast, state-school graduates gravitate toward individual contributor and support roles. "Ivy Leaguers probably position themselves better for job opportunities that provide them with significant upside," says Mr. Wise, adding that this is the first survey he's seen that correlates school choice to a point later in a career.