Warminster, Pa., Feb. 9--(AP) More than 50 Catholic high school students earned extra credit for protesting outside a suburban Philadelphia abortion clinic. The Archbishop Wood high School students--joined by a few school officials and college students--rallied Thursday outside a Planned Parenthood clinic for extra credit in a religion class.

"But that's not the only reason," said Courtney Morris, 17, who held an anti-abortion sign at the protest. Religion teacher June Littel said she wanted to reward students "for giving of their time."

The two-year-old clinic also offers counseling, cancer screenings and contraceptives, which also drew criticism from the protesters.