Junior High School

Junior Science Olympiad

Integrated physics, chemistry, biology, Earth science, experiments, and quantitative reasoning for junior science Olympiads.

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Independent practice

Current ranking

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How ranking works

General scores run from 0 to 100 and are sorted from highest to lowest across all eligible learners before results are divided into pages of 100.

General score Balances accuracy and breadth. Both matter: one lucky answer remains low, while answering without any correct result gives zero practice score. Correct Most correct answers; ties use answered problems. Answered Most completed problems; ties use correct answers. Accuracy Highest correct-answer percentage; ties use correct, then answered. Official Highest supervised event score; ties use verified event count, then practice.

General score formula

Let n be Answered and c be Correct.

Accuracy A: A = 100 x c / n. Breadth B: B = min(100, n), so 100 answered problems establish full breadth.

Practice score P is their harmonic mean: P = 2AB / (A + B). If A = 0, then P = 0.

General score G: without an official result, G = P. With an official result O, G = 0.60P + 0.40O.

For example: 1/3 gives G = 5.5, 1/1 gives G = 2.0, and 0/3 gives G = 0.0. For comparison, 90/100 gives G = 94.7.

Rank Student General Correct Answered Accuracy Official

No completed practice or supervised result yet. The first place is open.

Online ranking assumes every student answers independently and honestly. It measures practice, not an official title. Scheduled offline Olympiads provide supervised verification.