Students listen to a news conference at St. Peter the Apostle Catholic Church on April 23 in Philadelphia. Archbishop of Philadelphia, Charles Chaput, and Mayor Michael Nutter were speaking at an event for The Great Schools Compact, an effort to identify and replicate best practices at the city's highest-performing schools.

Students listen to a news conference at St. Peter the Apostle Catholic Church on April 23 in Philadelphia. Archbishop of Philadelphia, Charles Chaput, signed The Great Schools Compact, which is an effort to identify and replicate best practices at the city's highest-performing schools.

Archbishop of Philadelphia, Charles Chaput, center, signs The Great Schools Compact as Philadelphia Mayor Michael Nutter and students watch during a news conference at St. Peter the Apostle Catholic Church on April 23 in Philadelphia. Chaput signed the compact, which has already received a planning grant and will compete for an implementation grant the Bill & Melinda Gates Foundation.

Archbishop of Philadelphia, Charles Chaput, left, and Philadelphia Mayor Michael Nutter, meet during a news conference at St. Peter the Apostle Catholic Church on April 23 in Philadelphia. Chaput signed The Great Schools Compact which is an effort to identify and replicate best practices at the city's highest-performing schools, regardless of whether they are charter or district-operated or Catholic schools.

Pope Benedict XVI leads the Concistory.

Newly appointed cardinal Timothy Michael Dolan, center, archbishop of New York, receives congratulations from other cardinals at the Saint Peter's Basilica on Feb. 18, in Vatican City, Vatican. The 84-year-old Pontiff installed 22 new cardinals during the ceremony, who will be responsible for choosing his successor.

Newly-appointed cardinal Italian Giuseppe Versaldi shows his ring during the traditionnal courtesy visit after the consistory at the Vatican on Feb. 18.

New Cardinal John Tong Hon of China, center, poses as he receives guests in the Paul VI hall at the Vatican, Feb. 18.

Visitors queue on St Peter's square to take part in the traditionnal courtesy visit after the consistory at the Vatican on Feb. 18. Pope Benedict XVI on Saturday put his stamp of authority on the body that will elect his successor as he appointed 22 new cardinals at a time of roiling tensions in the Vatican administration.

Prelates walk in the Apostolic Palace at the Vatican after meeting the newly appointed cardinals elevated by Pope Benedict XVI, Saturday, Feb. 18, 2012.