cardinal gibbons was established in september 1961, by coleman f. carroll, who appointed thomas a. dennehy the first supervising principal, marie schramko, principal of the girls' division and henry mirowski, principal of the boys' division. cghs opened its doors to 176 freshmen and sophomores on a campus with two buildings. in the following years, the addition of the eleventh and twelfth grades, an enlarged faculty, a field house, science wing, cafeteria, gym, and new classrooms led to the current ten buildings.