Boris Johnson said maths and science is at record lows in Scotland, where education hasn’t been debated for two years.
This claim is based on a survey of public perceptions of different educational systems. It is not good data to objectively rank education systems.
The government picked out a number of figures on education spending which, while correct, mask the fact that schools spending has been falling in real terms in England.
The progress is influenced by Ofsted’s changing inspection practices.
Figures on attainment in Scotland depend on which measure you prefer to look at.
We've checked claims from this week's BBC Question Time on education systems across the world.
Research only looked at 15 countries, so can't tell us how England ranks worldwide for child happiness.
The Programme for International Student Development tells us some useful things, but not everything.
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