Tiny metrics are a big problem for league tables

Sample sizes as small as six pupils are among the reasons the Sats data analysis is a nonsense

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So the week has arrived when all of the hard work and trials that went into the Sats and the accompanying Teacher Assessment fiasco last summer gets turned into league tables for a public audience. Quite who that audience is, I’m not sure. I’ve known relatively few people outside of teaching show any interest in the data at all, but I guess there must be someone somewhere who’s gripped by it all. It all seems a bit of a nonsense to me.

Don’t mistake me for one of those anti-Sats, anti-test, anti-academic sorts. I’m quite happy with the principle that tests can give an indication of how a ...

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