On 2nd June the DfE published the 2017 performance attainment targets (P scales) and performance descriptors for pupils aged 5-16 with special educational needs (SEN).
The use of P scales is a statutory requirement for reporting teaching assessment to the DfE at the end of KS1 and KS2 for English, Maths and Science. P scales can also be used as non-statutory guidelines for KS4 SEN pupils who cannot access the national curriculum.
The DfE is still consulting on the recommendations outlined in the Rochford Review. You can respond until 22nd June here