The Swedish government has been accused of removing test scores of foreign-born pupils and those with poor Swedish language skills to artificially boost the country’s PISA educational score.
The revelations claim that Sweden did not follow the rules of the Organisation for Economic Cooperation and Development (OECD) which runs the PISA educational programme and that if they had, the country’s results would have been much lower than reported.
It's the same with crime statistics. If police don't bother with the paperwork, then the illegal activity didn't happen. Ta da! Low crime rates across Europe!