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Unsourced material may be challenged and removed. New Delhi, India which promotes science, mathematics, introductory computer education and English language skills amongst school children in India. The NCO, NSO and IMO are conducted in two levels. But the IEO, IGKO and ICSO are 1-level examinations.
However, the website insists that IEO now also has an “international level. IEO was a single-level exam.