Independent education consultant Terry Mackie argues that the key theme from today's report from the OECD, and what should now become a focus for the Welsh Government, is the need to improve how schools support low-achieving pupils.
"It is beyond dispute that Wales has not met the diverse learning needs of all students," he said.
Mr Mackie describes the problem as "fixable", and says there needs to be "differentiating" teaching for individual pupils, intervening where they need extra support.
More top news
A full-time carer from Port Talbot is celebrating after winning £1m on the EuroMillions.
Kane Wannell jailed for holding up a Post Office with a fake gun and pointing it at the owner and customer.
Outbreaks of mostly light rain will arrive from the north tonight with hill fog likely.