At the moment, the mean score appears as a "display item" at the bottom of a column, so it's not possible to map this value to the reports. We would like to display the year group mean on reports. It also seems that it's not possible to create a calculation that displays the year group mean in a separate column.
We need the ability to be able to either map the mean at the bottom of the columns to the reports, or have the ability to create a formula in a calculated column that displays the mean on each student row (same value of course!) so that the column can be mapped to the reports.