This should be possible. You could create a new calculated field (sum of males and females) for each school at each grade level. Then show the sum and the M/F counts at the same time.
Do you have this data in Excel or a workbook?
Without a workbook I can only guess at your structure but it looks like you don't have Gender on columns, only on color. You could place Gender on columns to separate out the numbers and then show the subtotals just like you have for Grade.