Language assessment (speech language pathology) is the systematic process of collecting and interpreting data regarding an individual's receptive and expressive language abilities, skills, and characteristics within the clinical scope of speech-language pathology. This evaluative procedure utilizes standardized tests, criterion-referenced measures, observational methods, and analysis of communication samples to identify patterns of language development, pinpoint strengths and weaknesses, diagnose potential language disorders or delays, and inform the development of appropriate intervention plans aimed at improving communication function and language proficiency. It serves as a foundational step for understanding an individual's language profile, particularly relevant in contexts involving language learning difficulties or differences across the lifespan, including school-age populations.