The development of A Simulation in Educational Evaluation (SIMEDEVAL), a simulation designed to increase the evaluation capability of school personnel is described. The Discrepancy Evaluation Model served as the simulation model and the framework for field test procedure. Instruments were constructed and validated for use in the field test with graduate education students. Results indicate that SIMEDEVAL increased students' knowledge of evaluation methodology and willingness to engage in evaluation, and demonstrated their ability to apply evaluation techniques in a structured setting. It is concluded that SIMEDEVAL warrants further development, and that simulations can be subjected to evaluation procedures. (Author/RC)