We have removed the VA Calculator from Insight over the weekend as the methodology used to calculate VA will be changing for 2018-2019 Y6 cohort. This is due to the introduction of new “pre key stage standards” that will require new nominal scores, not yet announced by the DfE. We should learn the details of the new VA formula in the 2019-2020 Autumn term.
In the meantime, James Pembroke has created an Excel version of the VA calculator which you can find in his blog:
I hope that helps