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Yeah, it's useless to look at time-series changes in this data without accounting for the fact that, e.g., 29% of students in Germany now have a migration background. A huge chunk of German students are growing up with parents who don't speak German at home, of course that's going to cause test scores to decline.

	▲	my-next-account a day ago \| parent \| next [-]
		Swedish scores sank for both Swedish and maths in "natives", 2nd gen and 3rd gen immigrants. Scores did not sink in Swedish for 1st gen immigrants. In other words: Everyone is getting worse, but some were already worse than others before.
	▲	jimaway123 a day ago \| parent \| prev [-]
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