Nearly 100,000 infants are in primary school classes larger than the planned maximum, Labour claims.
Shadow education secretary Tristram Hunt said the number of five to seven-year-olds in classes of over 30 children has "spiralled by 200% since 2010 - to nearly 100,000 infants".
By diverting resources away from areas in desperate need of more primary school places in favour of pursuing his pet project of expensive free schools in areas where there is no shortage of places, David Cameron has created classes of more than 40, 50, 60 and even 70 pupils.
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