Mission and Metrics
A practical guide to measuring what matters
How do you know if the passion and resources poured into your organization are truly making a difference in the lives of those you serve?
ABOUT THE BOOK
This book walks leaders through a three-part journey—from anchoring in mission, to building a practical framework, to creating a culture where data drives real improvement. Wherever you are on your way in understanding impact, progress is possible!
WHAT OTHERS ARE SAYING
"Peter, David, and Missy have achieved something quite remarkable in this book: they've taken a topic that is often complex and overwhelming and distilled it to the essentials that truly matter."
JAMES WATERS, PHD
Founder of Kingdom Impact
"This book does the challenging work of simplifying the complexities of measuring what matters, and doing so in a way that will build confidence in leaders and board members at any experience level."
MICHAEL CERNA
CEO of Accord Network
Meet The Authors
© 2026 Mission and Metrics. All rights reserved.
Why write another book on metrics?
Because what we measure
shapes how we lead.
Clarity
Part I
What do we hope to do? Anchor in the mission. Define the change you want to see, clarify your purpose, and ensure your activities align with your ultimate goals.
Framework
Part II
Build a simple theory of change that connects your mission, activities, and metrics—ensuring each measurement is meaningful and actionable for your team.
Culture
Part III
Create a culture of learning and responding, so that monitoring and evaluation lead to a cycle of continual improvement—not just reporting.
Generous Endorsements
"This concise book is an industry must-read and a foundational first step for any organization that wants to begin proving—and improving—its impact."
LANE KIPP
Founder & CEO of Agape Advisors
"Peter, David, and Missy have achieved something quite remarkable in this book: they've taken a topic that is often complex and overwhelming and distilled it to the essentials that truly matter."
MIKE BUTTON
Art Director of Pixel & Nudge
WRITTEN BY PRACTIONERS, FOR PRACTIONERS
Chief Executive Officer, HOPE International
PETER GREER
Peter serves as CEO at HOPE International and has coauthored multiple books on mission, development, and faith-based work including Mission Drift, How Leaders Lose Their Way, and Lead with Prayer.
Founder & Chairman,
David Weekley Homes & Dovetail Impact Foundation
DAVID WEEKLEY
David is known for his deep commitment to philanthropy, leadership development, and community impact across 35 countries through the Dovetail Impact Foundation.
Co-Founder & Executive Director, Seed Effect
MISSY WILLIAMS
Missy leads the largest network of Christ-centered savings and loan groups in Northern Uganda, empowering tens of thousands to overcome poverty and experience hope.
Others Doing This Work Well
PARTNERS IN THE FIELD
Meet the organizations advancing the field of impact measurement, spiritual metrics, and nonprofit excellence.
Dovetail Impact Foundation
Invests time, treasure, and talent in organizations that promote human flourishing—partnering with 115+ organizations across 35 countries.
Visit Dovetail ➡
FiftyFour Collective
Free online learning platform with 90+ courses and the 9D Assessment, guiding ministry leaders toward greater organizational health and impact.
Start Learning ➡
Kingdom Impact
Tools to measure and grow social and spiritual impact for faith-driven organizations. Developing the KIF Assessment Suite and Guidebook to Spiritual Metrics.
Explore Kingdom Impact Resources ➡
The Chalmers Center
Together with online, on-demand courses, the Chalmers Center provides learners with practical, biblical, and effective ways to care for their community.
Access resources and training ➡
Accord Research Alliance
Accord Research Alliance exists to connect, equip, and inspire Christ-centered organizations and practitioners in their journey of listening, monitoring, evaluation, and research.
Visit Accord Research Alliance ➡
RECOMMENDED READING
Books to Deepen Your Journey
Discover other resources from leaders in impact measurement, spiritual metrics, and development economics.
Shrewd Samaritan
Faith, economics, and the road to loving our global neighbor. A framework for compassionate and effective poverty intervention grounded in research.
Bruce Wydick
Guidebook to Spiritual Metrics
A forthcoming companion resource for measuring spiritual impact across Christian organizations. Currently in development with the KIF Learning Community.
James Waters
Towards an Understanding and Practice of Spiritual Metrics
Measuring spiritual impact faithfully and productively in Christian development agencies, missions organizations, schools, and churches.
Bruce Wydick
The Goldilocks Challenge
Right-fit evidence for the social sector. Winner of the 2018 Terry McAdam Book Award. The foundational CART framework for monitoring and evaluation.
MaryKay Gugerty & Dean Karlan
Theory of Change Template
A blank template to map your mission's inputs, activities, outputs, and outcomes—your organizational roadmap from intention to impact.
Ecosystem MapTemplate
Identify who else is operating in your space and where collaboration opportunities exist. See the full landscape of your sector.
Impact Statement
Writing Guide
Step-by-step guidance for crafting a clear and compelling impact statement that communicates your organization's unique contribution.
Monthly KPI Dashboard Template
A blank template to map your mission's inputs, activities, outputs, and outcomes—your organizational roadmap from intention to impact.
Step-by-step guidance for crafting a clear and compelling impact statement that communicates your organization's unique contribution.
9 Stops on the Journey Checklist
Setting KPIs and OKRs Guide
Identify who else is operating in your space and where collaboration opportunities exist. See the full landscape of your sector.
Visual Decision Tree
A blank template to map your mission's inputs, activities, outputs, and outcomes—your organizational roadmap from intention to impact.
Step-by-step guidance for crafting a clear and compelling impact statement that communicates your organization's unique contribution.
Sample Survey Questions
Journey Map
Grouped by Budget
Identify who else is operating in your space and where collaboration opportunities exist. See the full landscape of your sector.
Mission and Metrics
DOWNLOADABLE TOOLS
Move From Insight To Action
Practical templates, guides, and tools to help you connect your metrics to your mission. Enter your email below to get the full resource bundle delivered right to your inbox:
“Some of the most important things in mission-driven work are also the hardest to measure. In Mission and Metrics, David Weekley, Missy Williams, and Peter Greer show that this tension is not something to avoid—it is something to resolve. They offer a clear, practical, and deeply encouraging path that brings these out of tension into harmony.
Founding Partner of Halftime 100X Forum & Ardent Mentoring
LLOYD REEB
"Mission and Metrics is a wonderfully concise, engaging, convicting, and encouraging book written in easily accessible language that covers key principles, tools, and approaches with depth, transparency, and humor. This book is both a must-read primer for those just starting out and a superb refresher for those with much experience in this field."
Professor and Templeton Chair of Christian Service through Entrepreneurship
DR. DAVID BRONKEMA