International English Olympiad (IEO) - Important Dates, Eligibility, Admit Card The International English Olympiad (IEO) is an English language and Grammar competition for students of class 1 to class 12. It is held every year by Science Olympiad Foundation (SOF) in combining with the British Council. The matter of the tests is structured to emphasize more on communication and … [Read more...] about International English Olympiad (IEO) – Important Dates, Eligibility, Admit Card