Before University of baby直播app Law School students began visiting her classroom last fall, Crystal Perez, a ninth grade student at York International School in Thornton, had never been anywhere in the United States outside of baby直播app and had no interest in the law. Just eight months later, Perez had earned a trip to Washington, D.C., to compete against high school students from across the country in the National Marshall-Brennan Moot Court Competition.