The Pupil Premium is an allocation of additional funding provided to schools to support specific groups of children. These are pupils who are entitled to free school meals, those looked after by the Local Authority and the children of Armed Service personnel. These groups have been shown to be vulnerable to underachievement.
The funding is not an individual allocation for the eligible pupils, but rather a way to provide extra support as necessary so that 'disadvantaged' pupils end their Primary education prepared for success at Secondary school and beyond. Where provision impacts on all pupils, research, such as that carried out or summarised by the Education Endowment Foundation (EEF), points to disadvantaged pupils gaining proportionally more benefit. All schools are required to report on the amount of funding received and how it is being used.
https://educationendowmentfoundation.org.uk/