HOME < :: ADMINISTRATION :: ABOUT MATER DEI :: ACADEMICS :: ADMISSIONS :: ACTIVITIES :: GUIDANCE & COUNSELING :: FACULTY & STAFF :: ALUMNI & DEVELOPMENT :: CALENDAR FREQUENTLY USED NUMBERS ADMISSIONS (714) 850-9501 ALUMNI (714) 850-9532 ATHLETIC OFFICE (714) 850-9573 ATTENDANCE (LOWER) (714) 850-9515 ATTENDANCE (UPPER) (714) 850-9516 DEVELOPMENT OFFICE (714) 850-9534 GUIDANCE/COUNSELING (714) ...