This report describes a Checklist which has been used to supplement speech, hearing, and language screening tests of preschool children. The Checklist is designed to gain information from the preschool teacher about the child’s linguistic functioning in the classroom. This serves to alert the examiner to both problems and strengths which could not be discovered during standard screening. Analysis of responses to this Checklist with several populations of children suggests that, without adding extra time or expense to the screening, information on the Checklist provides insight into crucial language parameters which are characteristically not available to individuals providing screening services.