Top maths pupils 'fail to keep up with world's best'
The ablest primary pupils in England almost match those in Taiwan and Hong Kong in maths but fall back by the time they are 16, a study suggests.
The top 10% of English secondary pupils also drop behind those in Australia, Scotland Slovenia and Norway, analysis of international test scores indicates.
Ministers said their reforms would "drive up standards."
Reeta Chakrabarti reports.