CELF Assessment

The Clinical Evaluation of Language Fundamentals (CELF) is a standardized test that determines if a student has a language disorder or delay and allows researchers to compare subgroups within a large sample of students. CELF tests are administered to students individually.

For the GrapeSEED studies, raw scores were used instead of national norms, which are based on homogeneous groups of students. We want to measure growth gains between demographic subgroups, and raw scores are the purest way to do that.

The following table provides a brief description of each of the six subtests administered in Fall and Spring:

Assessment Description
Expressive Vocabulary Measures a student’s ability to name or correctly label illustrations of people, objects, and actions.
Phonological Awareness Measures a student’s knowledge of sound structure of the language and the ability to manipulate sound.
Recalling Sentences Measures a student’s ability to imitate a sentence given by the test administrator.
Recalling Sentences in Context Measures a student’s ability to imitate a sentence in the correct context given by the test administrator.
Word Structure Measures a student’s ability to complete sentences using the targeted structure(s).
Sentence Structure Measures a student’s ability to recognize a picture that illustrates a given sentence.