SANTA ANA, Calif. - A federal judge ruled that a lesbian student can sue her school district and her principal for revealing her homosexuality to her mother. Charlene Nguon, 17, may go forward with her suit claiming violation of privacy rights, U.S. District Judge James V. Selna ruled in a decision dated Nov. 28 and announced Thursday by the American Civil Liberties Union of Southern California. Orange County’s Garden Grove district had argued that Nguon openly kissed and hugged her girlfriend on campus and thus had no expectation of privacy.