The International English Olympiad, popularly known as IEO, is a national- and international-level competitive examination conducted by the Science Olympiad Foundation (SOF). It is open to school students from Classes 1 to 12 and assesses their command of the English language, including grammar, vocabulary, comprehension and reasoning. Held once a year, generally in school-based offline mode (with online options as notified), the SOF IEO aims to identify and improve English language skills among young learners and offers ranks, medals and rewards at school, zonal, national and international levels. The exam typically includes sections on word and structure knowledge, reading, spoken and written expression and an achievers section as per the class. This page covers complete IEO details – eligibility, exam pattern, important dates, application process and preparation tips.