Castle High School

Castle High School can refer to:

• John H. Castle High School in Newburgh, Indiana, United States
• James B. Castle High School in Kaneohe, Hawaii, United States
• Castle High School (Belfast) in Belfast, Northern Ireland
• Castle High School (Dudley) in Dudley, England
• Castle Hill High School in Castle Hill, New South Wales, Australia
• Castle Hill High School, Offerton in Stockport, England
• Mearns Castle High School in Newton Mearns, East Renfrewshire, Scotland