Jack Black comedy on top

LOS ANGELES -- "The School of Rock," with Jack Black playing a rocker posing as a substitute teacher to coach fifth graders for a battle-of-the-bands contest, earned top grades from audiences with a $20.2 million debut, according to studio estimates Sunday.\n"Out of Time," starring Denzel Washington as a police chief scrambling to prove his innocence in a double murder, opened in second place with $17 million.\nThe Rock's action comedy "The Rundown," the previous weekend's top flick, slipped to third place with $9.8 million, lifting its 10-day total to $32.7 million.\nBlack, a relative newcomer to lead roles, edged established star Washington even though "School of Rock" opened in fewer theaters. \n"'School of Rock' has a younger, school-age appeal. Black's like a big kid, like an Adam Sandler-type persona," said Paul Dergarabedian, president of box-office tracker Exhibitor Relations. "Irreverent, funny, bucks the establishment. That brings in younger audiences"