To see how many students are present per form on a particular day, go to Reporting > Reports > Attendance tab > Custom Attendance Report.
- Set the date range for a particular day, if you want to include just AM/PM sessions or both.
- In the "Group Students by" column, select "Form Group"
Click the "Choose" button at the bottom of the screen to run the report - this will provide a table with numbers of students present and those absent for each form group on that day.