Why is a score showing up as a U on mastery reports?

In JumpRope, a score of U (usually accompanied by a blue mastery bar) stands for Unrated.  A standard, unit, course, or student can receive a U under the following circumstances:

1. All of the underlying scores are marked as missing.  Depending on your school's settings, missing work may not count for or against a student's score.  In this case, if a student is missing all assessments for a standard then a score will not be calculated and it will appear as a U because there is no evidence of the student's mastery.  To remedy, enter at least one score that is not missing.
2. All of the underlying assessments and/or standards have a weight of zero.  In JumpRope, assessments and standards can be assigned a weight of zero to indicate that they should not count in the overall grade.  If all of these have a weight of zero, a score will not be calculated and a U will be shown.  To fix this change the weight of the assessments or create a new assessment with a non-zero weight and enter a score.
3. You (or your school) has chosen to use Final Ratings and you have not yet entered a score for the Final Rating.  Some schools and teachers choose to delay the calculation of mastery scores until a standard has been "completely taught," at which time the teacher is responsible for looking across all evidence to determine a final rating for each student and standard.  If you are using the Final Rating calculation method and have not yet entered a score for the final rating, a U will be displayed on mastery reports.  Depending on your school / account settings, you can change the calculation method from Plan tab (more about calculation methods can be found here: http://support.jumpro.pe/hc/en-us/articles/200355494-How-are-mastery-values-calculated)