State grammar schools were a product of the Education Act of 1944 as part of the tripartite system. Pupils who performed strongly in their 11+ examination and were therefore considered to be academic attended these schools. Since comprehensivisation, grammar schools are now uncommon but still exist in several local education authorities. However, the Conservative Party's current policy, pushed forward by Theresa May, is to introduce a new generation of grammar schools which they consider will support social mobility.