If a student has reached the 5 attempt limit on taking a Classworks assessment, currently, there is no functionality that would allow a reset of the testing attempts after the student has exhausted the number of attempts for the testing window. 

If you believe the student has passed their grade level and meet target, you could override the student grade level testing, by clicking on the name of the student and clicking "override" to the grade level desired. This will allow the student to start at the grade level you selected. Typically, this feature is used for students needing accommodations or enhancement opportunities in the individualized learning assignments, but it is an option in other applicable circumstances, as needed.

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