Abstract
The purpose of this study was to evaluate an environmental education professional development course using Stake's Countenance Model as the organizational framework. A complex analysis of 10 course features using 8 evaluation instruments focused on congruence between what was intended to occur and what was actually observed to occur before, during, and after instruction. The Stake model demonstrated its effectiveness by facilitating a thorough examination of both quantitative and qualitative data during all phases of course execution.