Clinical supervision at its best is a collaborative process whereby teacher and observer work together for instructional improvement. The Snyder-Pavan Supervision Practices Questionnaire seeks to obtain a description of the clinical supervision practiced by administrators, supervisors, and teachers. The majority of items are scored five through one for "always" through "never" respectively. The data obtained from the questionnaire are analyzed with descriptive statistics. Five research studies have been conducted in Pennsylvania using the questionnaire with similar results, but further comparisons need to be made. With wider usage, further refinements in the instrument can be made. The instrument provides a tool for diagnosing the level of clinical supervision usage in a school or school district. Data from the instrument would enable the practitioner to determine if further training is needed or desired. Tables provide: an outline of the clinical supervision process; the Snyder-Pavan Clinical Supervision Practices Questionnaire; the questionnaire scoring guide; categories of use; Pavan elements present in "Instructional Improvement through Inquiry"; the concepts of clinical supervision and their respective question clusters; and a comparison of questionnaire items 1-28. (AMH)