Olympiads compared

• SOF vs SilverZone: which olympiad suits your child?
• SOF vs Unified Council: which olympiad suits your child?
• SOF vs Indian Talent: which olympiad suits your child?
• SOF vs CREST: which olympiad suits your child?
• SOF vs IOF: which olympiad suits your child?
• SOF vs Humming Bird: which olympiad suits your child?
• SilverZone vs Unified Council: which olympiad suits your child?
• SilverZone vs Indian Talent: which olympiad suits your child?
• IMO vs iOM vs UIMO vs CMO: maths olympiads compared
• NSO (ISO) vs iOS vs NSTSE vs CSO: science olympiads compared
• IEO vs iOEL vs UIEO vs CEO: English olympiads compared
• NSO vs ISO: the same olympiad, and a second ISO
• NTSE vs NSTSE: two exams with almost the same name
• SOF IMO and the International Mathematical Olympiad: same initials, different exams
• Online or offline: which olympiads can be taken from home?
• Are olympiads government exams?
• Are olympiads worth it?

Checked on each organiser's own website, 25 Oct 2026. Rules and dates can change; their site is always final. Olympiad Owl is not linked to any organiser.