“Verbal communication is the basis for everything that occurs in classrooms, whether this is the delivery of new information or the regulation of behavior. Although language skills are biologically primary, their development in children of the same age can be highly uneven, Further, a significant proportion of children in any class may have developmental language disorders, which may or may not have been formally diagnosed. Such disorders typically impact a student’s success with written or spoken language.”
Ashman, Greg, and Pamela Snow. “Oral Language Competence: How it Relates to Classroom Behavior.” American Educator Vol. 43, No. 2 (Summer 2019): 37-41.