Allentown Central Catholic High School Secondary School; Grades 9-12 301 N. Fourth St. Allentown, PA 18102 Principal: Mrs. Yvonne G. McCarthy Asst. Principal: Mr. William Tielman Jr. Enrollment: 923 Telephone: 610-437-4601 Fax: 610-437-6760 Email us at: altlcchs@ptd.net or visit us on the Web at: www.acchs.info Post Office Box F  •  Allentown, PA  •  18105-1538 Copyright 2003 The Catholic Diocese of Allentown Disclaimer and Terms of Use