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We welcome questions about grading assumptions, accessibility problems, or incorrect arithmetic.

iEstimates use only the rules you enter. The example grade-point scale is a U.S. college 4.0 model, not any school’s official policy or a local grading system.

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Write to mrkcal@mrkcal.com. If reporting a calculation issue, describe the rule and numbers without including private student records. We cannot interpret an institution’s official policy for you; consult your instructor or registrar for that.

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Use the same assumptions through each step, and check your school’s rules before acting on an estimate.

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