Go to Students > Assessments > Formative Tracking > Analysis > Mark Distribution.
The Mark Distribution page allows you to view the average distribution of marks across a curriculum and then filter this information by groups such as FSM vs non-FSM or boys vs girls.
You can select your filter settings by clicking on filter the bar at the top and select your choices.
This information can be viewed as a table or chart by clicking on the tabs at the top of the report. Clicking into each ‘band’ will allow you to see the % of students the results are relating to.