Value Added

Value Added is the independently verified statistical measure which many schools in the UK, including Walthamstow Hall, use to track the academic progress of students from Year 7 to Year 11 and again from Year 12 to Year 13.

Alongside many other UK maintained and independent schools Walthamstow Hall submits data to the Centre for Evaluation and Monitoring at Cambridge University (CEM) each year. They use the data to produce value added scores and a ranking for each school.

Value Added at I/GCSE

Schools provide CEM with two sets of data, five years apart. The first set of data is submitted when pupils join their senior school in Year 7. At this stage the pupils complete a Cognitive Ability Test (called MidYIS) which provides a baseline of their natural ability in different areas. CEM uses this data to predict the likely GCSE outcomes for each pupil. Five years later, the school submits the second set of data, the final I/GCSE grades of each pupil. The two sets of data, i.e. actual versus predicted grades are overlaid and the difference between the two gives the value added score. The data is standardised using results from participating independent schools to allow year-on-year comparisons. A value added score of 1+ represents an improvement of one grade at I/GCSE.

Value added scores are a fantastic indicator of the quality of a curriculum and the teaching which delivers it.

Walthamstow Hall consistently achieves high value added scores, with pupils gaining grades higher than the grades predicted for them when they join the School in Year 7.

Looking at recent years, in 2017 Walthamstow Hall ranked 18th out of 335 participating independent schools, in 2018 69th out of 283 schools, and in 2019 15th out of 283 schools. Walthamstow Hall’s value added score in 2020 ranks the School as 10th out of 283 independent schools. This is higher than in previous years and statistically significant. However, in 2020, the examination results used were Centre Assessed Grades (CAGs), due to the cancellation of the examination series, except for RS Short Course, where the examination was taken early. Therefore, value added results this year must be interpreted with that in mind.

Walthamstow Hall’s value added score in 2021 is ranked 13th out of 283 independent schools.  This year’s results are based on Teacher Assessed Grades, and therefore, as with 2020, the results need to be evaluated within that context.

Walthamstow Hall is consistently ranked in the top 25% of independent schools, and in 4 out of the last 5 years have been in the top 5% of independents schools for I/GCSE value added.

Value Added at A Level

To assess value added at Sixth Form, schools provide CEM with two sets of data, two years apart. The first set of data is submitted when pupils join Year 12. At this stage, the pupils complete a Cognitive Ability Test, called ALIS, which provides a baseline of their ability in different areas. CEM uses this data to predict the likely A Level outcomes for each pupil. Two years later, schools submits the second set of data i.e. actual versus predicted grades are overlaid and the difference between the two gives the value added score.

From 2017-2020 Walthamstow Hall has appeared within the 73rd percentile of Independent Schools for value added at A Level i.e. at least 73% of Independent Schools in the CEM sample, have lower value added scores.  In 2021 the value added result was high and statistically significant, and positioned us in the 99th percentile, as was the case in 2020.

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