A federal judge has denied a transgender teenager’s request to allow him to use the same bathroom as his peers at his public school in Virginia. Instead, the judge ruled Friday, the teenager must continue using a separate, private bathroom that he has said makes him feel “singled out and humiliated.” Gavin Grimm, a teenage boy who was born female, used the boys’ bathroom for seven weeks with no problem, according to the American Civil Liberties Union, which brought a lawsuit against the Gloucester County School Board on his behalf. But then parents heard about the teen using the boys’...