Eg Schools often want to see what ELG data was for a cohort once they are in a higher year group. Currently this involves having to manually make a group that includes leavers (but only those who were here at the time) and excludes pupils who have joined since (even though some of these may have results that have been imported since).
The Statutory Dashboard will include pupils with data so works for leavers but not necessarily joiners and does not tell us who is included or the % who achieved Expected for each Aspect, the Outcomes report does this but needs to be filtered for a group manually created.