WASHINGTON — House Republicans pressed ahead Wednesday with one of the central planks of their midterm election campaign, introducing legislation to give parents more of a say in school curriculum.“That’s what today is all about: It’s about every parent, mom and dad, but most importantly about the students in America,” Speaker Kevin McCarthy, R-Calif., said in introducing the bill at an event on Capitol Hill.Reflecting the importance to the GOP agenda, the parents’ bill of rights is the …