This volume serves as a comprehensive assessment tool designed to evaluate language proficiency and comprehension within the Streamline English curriculum. The authors, Bernard Hartley and Peter Viney, utilize their extensive background in English language pedagogy to construct a series of tests that align with the structural and lexical progression of the Streamline series. The framework focuses on measuring student retention of grammatical concepts, vocabulary acquisition, and communicative competence through standardized testing formats.

Educators frequently utilize this text as a standard supplementary resource for tracking student progress within the Streamline English framework. Experts note that the tests are structured to provide clear, measurable benchmarks for both teachers and learners.