Hmm, interesting to look at these numbers in the light of the Bellamy article.
You report "schools could save 50% of their ICT budget"; the TES article starts "Primary schools could cut their computer costs by nearly half" (my emphasis), and then at the end says "Average costs [...] were 24 per cent less per computer in secondaries using open source".
Maybe they could use some of the savings to improve maths teaching. :)
Hugo
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