The Department of Education assigns an overall score to schools based on the annual survey, weights the results heavily based on demographic peer comparisons, and converts the score to an A-F letter grade.

With Rowlands converting the score Wales had beaten New Zealand 13-8.

One problem with the grading system is that it causes problems when meta review sites have to convert the score to a numerical value that doesn't quite reflect the grade that GR gave it.

Schreider converted the score.