Whether clearly defined or not, each educator has a theology of personality development. Theories of personality development may be used by the educator to assess what he is doing educationally. From a survey of psychological literature and a survey of biblical teachings, the author offers the following elements as important areas of personality development for the Christian teacher. Personality may be regarded as God-created, stage-oriented, heredity and environment, equilibrium, integrated approaches, and as choice. Each of these areas has educational implications for the classroom. The Christian educator must strive to provide a climate congruent with the highest development of individual personalities.