Discusses validation studies of three British English language proficiency tests--the English Proficiency Test Battery, the English Language Battery, and the English Language Testing Service. Concludes that valid language tests depend on test constructors' knowledge of language and on their judgment as to the parameters of language proficiency.…

Suggests that any model of washback must include insights from the theory of educational innovation to help explain why tests do not always have the desired or feared effect. Key concepts in educational innovation are reviewed, showing how these concepts are manifested in a case study in washback and outlining how they are being applied in recent…