Unfortunately the KS5 Retention measure, as detailed from page 41 onwards in the DfE's Technical Guide, is not currently available to analyse within the KS5 reports of Analytics.
We're afraid there is currently no timeframe for when this will become available, however if this is something you would like to be included in the future, please feel free to take a look at our Juniper Ideas Portal linked below, in which Sisra users are able to add or vote upon any requested features.
| Juniper Ideas Portal - Sisra Analytics |