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CREST Reasoning Olympiad (CRO)

Olympiad
CREST Olympiads Online 2026

Information

The CREST Reasoning Olympiad (CRO) is a competitive reasoning and aptitude exam for school students in grades 1 through 10. The exam is available online and has multiple test windows across the year. It is delivered by the CREST Olympiads organisation and offers level-based assessments (Level 1 and Level 2).

Eligibility

Open to students in grades 1 to 10.

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