This document discusses using a developmental approach to evaluate innovative extension programs. A developmental approach involves ongoing adaptation of an intervention based on emerging outcomes and involves flexible evaluation methods. It discusses two extension programs, the Grape CoP and Network Literacy CoP, that used this approach. For both programs, leaders wanted a flexible evaluation process that allowed outcomes to emerge and change over time. The evaluators worked closely with program leaders, using informal reporting and conversations to provide continuous feedback and help programs adapt. This developmental approach helped programs address challenges and work towards broader impacts and system changes.