A girl who alleges a middle school classmate sexually harassed her and other female students does not have a case against school officials — at least not yet, a federal judge has ruled.In a written opinion last week, U.S. District Judge Amy St. Eve threw out a lawsuit accusing officials of failing to take action against a boy at Central Middle School in Evergreen Park who allegedly verbally and physically assaulted female students.But St. Eve gave the plaintiff — a 13-year-old girl who is pursuing the suit as …