The Blind Brook Mock Trial team has been very successful on all levels of the New York State Mock Trial Competition, sponsored by the New York State Bar Association. The New York competition is the largest in the United States, with over 375 high schools participating each year. The Blind Brook team is usually made up of 14-16 students. Those wanting to join must go through an interview and question/response tryout. Six students are assigned lawyer positions (three for Prosecution, three for Defense) and six are given witness positions (three for Prosecution, three for defense).