Watch the full interview with the Berwick MP Sir Alan Beith on tonight's Around The House (Thursday 21 November) at 11.45pm.
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Labour Education spokesperson Iain Gray said SNP ministers should be ashamed, as Scotland falls down international education rankings.
One of Scotland's foremost education academics has described today's figures on Scotland's standing in the world as "shocking".
Swinney says OECD statistics make for "uncomfortable reading" and pledges to press ahead with reform.