This measure is designed to identify, assess, and diagnose the oral language capability of English and Spanish speakers, and to prescribe corrective or improvement activities. Part One provides minimum criteria to identify children who might need training in a second language. Part Two is designed to assess the child's primary or home language and determine if additional oral language diagnosis is necessary. Part Three is a diagnostic measure designed to determine the child's level of oral language development. Part Four provides prescriptive activities to help teachers develop the student's oral language capabilities based on the diagnostic data obtained from Part Three. The measure is intended particularly for teachers with limited language evaluation experience and/or structural linguistic training. The guide has the following elements: (1) a definition of language and a "non-scientific" six-level language development continuum on which the four parts of the measure are based; (2) detailed instructions for using the four parts of the measure; (3) four practice exercises to familarize the evaluator with the process; (4) pictures to be used in administering parts two and three of the test; and (5) sample record forms in English and Spanish. (Author/AMH)