To build an impact measurement practice you can trust, define the change you’re actually after before you collect any data, map the logic connecting your work to it, and choose one or two honest indicators you can compare over time. Everything else is detail layered on top of that foundation.
Most organizations I’ve worked with skip straight to picking indicators. They build the measurement before they’ve named the change or the logic connecting their work to it. The indicators end up measuring whatever was easy to count, not what actually mattered.
Why this is harder than it looks
Impact measurement is the systematic effort to assess the change produced by an action, replacing “we think we made a difference” with evidence.
The distinction that changes how you see it
Monitoring tracks whether you’re doing what you planned. Impact measurement tracks whether what you planned actually produced the change you claimed. Both matter. Only one answers the question people usually mean when they ask if the work is working.
How to build the practice
Name the intended change first
Name the intended change and who it’s for, before you touch any data.
Build the logic that connects your work to it
Build the logic connecting your activities to that change, a theory of change, even a rough one.
Choose one or two honest indicators
Choose one or two honest indicators with a clear before and after, not a dozen vanity numbers.
Handle attribution honestly
Name the other factors that could explain the result, and don’t claim more credit than the evidence supports.
Revisit the practice periodically
An indicator that made sense at the start can stop being useful once conditions change.
A concrete example
At the Miller Center for Social Entrepreneurship, tracking more than a thousand alumni meant resisting the urge to report every number available, applications received, sessions attended, satisfaction scores, and instead holding onto the two or three that answered the real question: did ventures survive, and did they create durable employment. Everything else was context, not proof.
What’s next?
This practice only works once you’ve picked the right metric to feed it. See how to choose an impact metric you can actually track. For a walkthrough of measuring a specific project end to end, see the companion post how to measure the impact of your work. Both sit inside Impact, one of the five elements of the Method.
Next step: Read the Method →, or see how to choose an impact metric you can actually track.
FAQ
What’s the difference between monitoring and impact measurement?
Monitoring checks whether you did what you planned. Impact measurement checks whether what you planned actually produced the change you claimed.
Is impact measurement only for large organizations?
No. A single founder tracking one honest indicator over time is doing impact measurement. Scale changes the tools, not the requirement for evidence.
What if the impact I’m working toward takes years to show up?
Track credible leading indicators in the meantime, changes that reliably precede the long-term outcome, while staying honest that they are proxies, not the impact itself.
