2011年6月英语六级试卷（文字版）_第2页

The problem is pronounced at public universities. In 2007 the University of Wisconsin-Madison – one of the top five or so prestigious public universities– graduated 81% of its white students within six years, but only 56% of its blacks. At less-selective state schools, the numbers get worse. During the same time frame, the University of Northern Iowa graduated 67% of its white students, but only 39% of its blacks. Community colleges have low graduation rates generally– but rock-bottom rates for minorities. A recent review of California community colleges found that while a third of the Asian students picked up their degrees, only 15% of African-Americans did so as well.

Private colleges and universities generally do better, partly because they offer smaller classes and more personal attention. But when it comes to a significant graduation gap, Bowdoin has company. Nearby Colby College logged an 18-point difference between white and black graduates in 2007 and 25 points in 2006. Middlebury College in Vermont, another top school, had a 19-point gap in 2007 and a 22-point gap in 2006. The most selective private schools – Harvard, Yale, and Princeton– show almost no gap between black and white graduation rates. But that may have moreto do with their ability to select the best students. According to data gathered by Harvard Law Schoolprofessor Lani Guinier, the most selective schools are more likely to choose blacks who have at least one immigrant parent from Africa or the Caribbean than black students who are descendants of American slaves.

"Higher education has been able to duck this issue for years, particularly the more selective schools, by saying the responsibility is on the individual student," says Pennington of the Gates Foundation. "If they fail, it's their fault." Some critics blame affirmative action – students admitted with lower test scores and grades from shaky high schools often struggle at elite schools. But a bigger problem may be that poor high schools often send their students to colleges for which they are "undermatched": they could get into more elite, richer schools, but instead go to community colleges and low-rated state schools that lack the resources to help them. Some schools out for profit cynically increase tuitions and count on student loans and federal aid to foot the bill–knowing full well that the students won't make it. "The school keeps the money, but the kid leaves with loads of debt and no degree and no ability to get a better job. Colleges are not holding up their end," says Amy Wilkins of the Education Trust.