Introduction to retention measures
The Retention measure shows the percentage of students who are retained to the end of the ‘core aim’ (or main learning aim) of their study programme at a school or college.
Students are counted as retained if they are recorded as having “completed the learning activities leading to the learning aim” by their institution. This information is collected in the school census (opens in a new tab) or for students that attended sixth form or FE colleges, the Individualised Learner Record (ILR) (opens in a new tab).
Retention measures are not calculated for independent schools or special schools (both independent and maintained) as learning aims data is not available for these schools.
The Retention measure is calculated by dividing the total number of students retained by the total number of students with a core aim, in each of the five programmes approved for reporting in performance tables: academic, A level, applied general, tech level, and at level 2, technical certificate programmes.
Since academic programmes comprise largely of A levels, only data for A level core aims are described here; overall data for academic programmes can be found in the ‘create your own tables’ section and in the underlying data available to download.
Alongside the headline Retention measure there are two supporting retention measures:
Retained and Assessed: The percentage of students who are retained to the end of their course and are assessed.
Returned and Retained for a second year: The percentage of level 3 students who return to the same provider and complete their programme of study in their second year. (The main difference when compared to Retention is for students who complete their core aim in one year.)
A fuller description of the methodology underlying retention measures can be found in the 16-18 technical guide (opens in a new tab) (from page 41).
Retention measures during COVID-19
Unlike attainment measures, retention measures did not need adaptations to the methodology as they are not based on results data (meaning all exam entries are considered in the Retained and Assessed measure, irrespective of whether the result attached to the exam entry was awarded through the CAG or TAG processes; this is a difference from adapted attainment measures for 2021/22 where both exam entries and results awarded from January 2020 to August 2021 were excluded from calculations).
However, changes to teaching and assessment during the Covid-19 pandemic may have affected retention measures in other ways. For example, when schools and colleges closed for most students at the end of March 2020, students may have been recorded as completing their learning aim when they may have not finished their course had it continued to the end of the 2019/20 academic year. Another example is that students were only assessed on the content they had been taught in 2020/21, hence may have been recorded as Retained and Assessed when just part of the syllabus had been delivered.
Retention measures and the impact of the trigger change in 2020/21
The impact of the trigger rule change, meaning that students were no longer automatically reported after two years in 16-18 study, was to reduce the reported number of students in scope for retention measures across all exam cohorts in 2020/21, with the biggest impact on vocational and technical cohorts (VTQs).
For retention measures, this meant that Retention rates were slightly increased in 2020/21 for level 3 cohorts (A level, applied general, tech level) than would have been seen otherwise. However, the impact on the level 2 technical certificate cohort was a large decrease in Retention rates (and in cohort size).
Fuller analysis on the impact on 2020/21 retention data can be found in the methodology document, in the section ‘Changes introduced in the 2020/21 release’, under the heading ‘Impact of the trigger change on headline retention rates’.
Students whose reporting was delayed for one year due to the 2020/21 trigger change are reported in 2021/22. In other words, the impact of the trigger change was one-off discontinuity in retention data for 2020/21. For this reason, when looking at trends, data for 2021/22 is better compared to data for 2019/20 and earlier years.