This article creates the Teaching Methodology Instrument (TMI) to help determine the level of adult learning principles being used by a particular teaching methodology in a classroom. The instrument incorporates the principles and assumptions set forth by Malcolm Knowles of what makes a good adult learning environment. The Socratic method as used in law schools is applied to the instrument to determine whether it displays more pedagogical or more andragogical principles. (Contains 2 tables and 2 figures.)