Pope Francis arrives for a meeting with catholic schools students in St. Peter's Square at the Vatican, Saturday, May 10, 2014. Schoolchildren have turned out in an exceptionally huge crowd for a joyful afternoon with a playful Pope. The students, traveling from throughout Italy, overflowed from St. Peter's Square, packing several blocks leading to the Tiber river. Vatican Radio put the turnout at 300,000. (AP Photo/Alessandra Tarantino)