Dylan explains why it is not correct to say that a test is valid and also share some interesting reflections about reliablity and bias in testing. The video and the audio with questions and answers are available at Learning Sciences Dylan Wiliam Center.
A twitter discussion started by Crispin Weston (@crispinweston) to argue that @dylanwiliam «is wrong to say that there is no such thing as a valid test» is below. Read the full discussion about the controversial topic.
In my talk at #BrySummit18 on 6 June («Don’t stop teaching to the test») I shall argue that @dylanwiliam is wrong to say that there is no such thing as a valid test & that his account of reliability is too pessimistic @bryedusummit https://t.co/XeXA2rgcLt https://t.co/A5K5HzEwvC
— Crispin Weston (@crispinweston) 29 de mayo de 2018