Each student must form a dissertation committee, comprising four or five individuals. Three members of the committee must be tenured or tenure-track faculty in the Computer Science Department. The fourth member must be from the graduate faculty of George Mason University but outside the department. The chair of the dissertation committee, who must also be the dissertation director, must be tenured or tenure-track faculty in the Volgenau School. The fifth member member may be from outside the university. The committee must be approved by the chair of the Computer Science Department.