Outcome evaluations are becoming more valuable. These measures should be as important, if not more important, to your group as they are to your funder. Outcome data supports ongoing funding, builds your group’s reputation, and creates the institutional memory necessary to prepare subsequent proposals.
Whether you have public or private funders, you should set up accountability and evaluation systems. Having these will measure successes and alert you if the project has gone ‘off the rails’ and is not working.
Public agencies provide painstakingly specific evaluation techniques and those can be onerous. If evaluating a program gets in the way, let the funder know. Remember that your funder may not realize their evaluation techniques are unnecessarily egregious unless someone tells them so.