There's no shortage of dashboards and spreadsheets in the association world. Every chapter leader can point to event headcounts, email open rates, or a well-attended mixer as proof of success. But the reality? Those numbers often tell you more about activity than actual health. A chapter can be buzzing with events, yet membership is quietly shrinking, finances are fragile, and data is a mess. That's why the real story of sustainable growth is written in a sharper set of indicators, what we'll call chapter performance metrics.