PROBLEM TO BE SOLVED: To provide an operation skill evaluation method capable of reducing influence of components which are not derived from actions of a driver.SOLUTION: A driving skill evaluation method executed by a computer comprises: a skill evaluation steps S05, S06 to evaluate a driver's driving skill on the basis of detected values indicating vehicle conditions; components separation step S04 to separate the detected values indicating the vehicle conditions into driver action components which reflect the driver's action, and non-driver's action components which do not reflect the driver's action; and a skill evaluation correction step S11 to correct or discard evaluation of the driving skill on the basis of at least one of an amount of the driver's action components and an amount of the non-driver's action components.
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