To ask the Secretary of State for Children, Schools and Families what estimate he has made of the annual cost of reducing class sizes at Key Stage 1 in English schools to (a) 20 or fewer and (b) 25 or fewer. (150696)

There is no clear evidence that further reductions in the infant class size limit from 30 would have further impact on overall pupil attainment, and therefore we have not done any work in costing this. Teachers, supported by teaching assistants, are free to organise their classes into small groups if they consider it will benefit individual pupils' learning.