The poor performance of Welsh students in the Programme for International Student Assessment (PISA) results formed the backdrop for the debate.
He said that the reason behind the proposed changes was to see Wales in the top 20 of countries in the Programme for International Student Assessment (PISA) by 2015.
In the OECD's annual study of educational performance, the Programme for International Student Assessment (PISA), girls score better in reading in all countries even at primary level, and much better by the time they are 15.
Scores released yesterday for the 2006 Programme for International Student Assessment test showed that American 15-year-olds trailed far behind their peers from many industrialized countries.
The OECD Programme for International Student Assessment or Pisa tests examines the performance of 15-year-old pupils in mathematics, science, and reading.
BBC: OECD asked by Leighton Andrews for Wales education review
The latest Programme for International Student Assessment survey, in 2009, showed the UK had slipped to joint 23rd place in a global assessment of literacy, he said.
The 2009 Programme for International Student Assessment (PISA) tests showed that overall English pupils came 28th for maths out of 65 countries.
But professor Bray points out that the high performers in the international Pisa tests (Programme for International Student Assessment) also include countries that do not use much tutoring, such as in Scandinavia.
Professor David Egan of the University of Wales Institute Cardiff (UWIC) said that Wales' poor performance in the OECD's Programme for International Student Assessment (PISA) was cause for concern.
OECD's Programme for International Student Assessment have shattered the belief that Italian schools are among Europe's best.
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