i created qryAvgMarks (see in design view).
then i add this query to the crosstab query, qryGrades.
next, add the Average field to the report.
view your report in Layout view.
if you pan to the right, you will see dotted line at the right.
that is the Limit of A4 in landscape view. so you must
adjust the textboxes so it will not go beyond the dotted line.