LONDON (AP) — Irish band U2 returned to school Friday to put on a surprise class in rock and roll where they formed a half century ago. The band ripped through a seven-song set including an encore of “With or Without You” for hundreds of students in the schoolyard of Mount Temple Comprehensive School in Dublin and a crowd of others who got word of the gig or — like a construction crew several floors up a nearby building — were lucky to be within earshot and have a bird's eye view. as...