Official documents
Official olympiad regulations, reports, and syllabuses
Official documents and reference resources
Resources marked “Previous edition” are retained as archive material. Approved documents for the 2026–2027 edition will be published here after approval, as explained in the notice above.
Previous edition
ONIA 2026 regulations
ONIA 2026 regulations retained for reference
Previous editionIOAI 2025 report
IOAI 2025 report retained for reference
Optional-course syllabus
Syllabus for the optional course
Recommended syllabus
Recommended preparation programme
IOAI accreditation
Official accreditation document
Extended team
Preparation materials for the 2024 extended-team stage.
Shortlist team
Intensive preparation materials for the 2024 shortlist team.
Problems from previous editions
Local stage 2024
County stage 2024
National stage 2024
ArchiveProblem 1
Problem 1
(coming soon)
ArchiveProblem 2