Barack Obama wanted the US to have the highest proportion of university graduates in the world by 2020.

But the US president's target is far from being reached, as a recent Harvard study found that the country has one of the highest college drop-out rates in the world.

Almost half of all students enrolled in a four-year university course do not graduate, mostly because of costs.

Al Jazeera's Patty Culhane reports from Maryland.

Source: Al Jazeera