Visit School Website. Catholic School Search. The Archdiocese of Chicago Catholic schools serve more than 40,000 students in 154 elementary and high schools in Cook and Lake counties. It is one of the largest private school systems in the United States. Its schools have received 96 Blue Ribbon awards from the U.S. Department of Education over the past 10 years. Are you passionate about young children and nurturing young minds in a loving, faith-b...