 Plano Senior High School and Plano East Senior High School also serve separate sections of Collin County Richardson.The Roman Catholic Diocese of Dallas operates two K-8 schools, St. Joseph School and St. Paul the Apostle School in Richardson.Other private schools include Canyon Creek Christian Academy (K-12), North Dallas Adventist Academy (K-12), IANT Quranic Academy (K-12), The Alexander School (8-12), Dallas North Montessori School (ages 3–9), and Salam Academy (K-12).