PITTSBURGH (AP) — A woman has been jailed on charges she pretended to be a Pittsburgh high school student to gain entrance, then assaulted a principal and security guard. Online court records don't list an attorney for 18-year-old Corial (kor-ee-AL') Littlejohn, who faces a preliminary hearing Oct. 20 on charges of aggravated assault, resisting arrest, criminal trespass and falsely identifying herself to law enforcement.