King William's College says it'll offer A-levels as well as International Baccalaureates from September.
Sixth Formers will be able to study 22 subjects via live online lessons.
The Castletown school says the exams will be offered alongside its established International Baccalaureate Diploma programme.
Principal Damian Henderson described the move as a "ground-breaking initiative" and an information evening will be held on Tuesday, February 10 from 4.30pm.
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