The chair of the Cabarrus County, North Carolina, Board of Education ordered its teenage student interns to leave a public meeting this week before a board member read an oral-sex scene aloud from an award-winning teen novel. “This is the kind of crap that’s in our schools, and you think this is OK?” board vice-chair Laura Blackwell said during Monday night’s work session, referring to a passage in John Green’s 2005 “Looking for Alaska.” Blackwell didn’t say to whom she was directing her question, but the board was discussing a letter from 132 parents concerned that the school board intended t…