On: U.S. math scores drop on major international test

[prisenco]

This is specious. Can you show me direct evidence that these policies have been adopted nationwide to the broad degree necessary to explain the data as presented in the original post?

[rahimnathwani → prisenco]

  Can you show me direct evidence that these policies have been adopted nationwide to the broad degree necessary to explain the data as presented in the original post?

No, not 'to the broad degree necessary to explain the data'. But no one in this thread is claiming that these policies alone explain the data.

You say it's a local thing only. I explain how local things expand. You say it's a hypothetical. I say no these things have expanded already. You say that doesn't fully explain the data.

If you will dismiss any hypothesis that doesn't fully explain the data, you will never receive a satisfying answer.

[prisenco → rahimnathwani]

I would need something more than a link to an opinion piece and a thumbtack and yarn on pinboard, yes.

I have not seen any evidence that this policy, loosely defined, has spread in any considerable way nationally.