No more homework, no more books, no more teachers dirty looks! School's out - or nearly out - for summer. But while some hard-won time off may seem like good news for students, a recent RAND study shows that by the end of the three-month break, students lose up to a month's worth of what they've learned. What's a parent to do? Madeleine talks to Geoffrey Borman, an education professor at the University of Wisconsin, Madison.