This study discusses some of the central concepts, assumptions and methods used in the development and design of a Management Information and Evaluation System for the Peace Corps in Colombia. Methodological problems encountered are reviewed. The model requires explicit project or program objectives, individual staff behavioral objectives, client change-objectives, specification on inputs, and description and verification of outputs for staff and client changes. Verification procedures include a work situation description and analysis, in-process reports and meetings, and an end of service report and review by field personnel with staff verification. A process and analytical outline is presented and discussed. An appendix is also included--Initial Analytical Possibilities for M. I. & E. System outputs. (FDI)