System change starts in the microcosm
We spend a lot of time with math leaders who oversee 20, 50, and even 200 schools. Nearly every conversation eventually arrives at the same question:
how do we get everyone in an entire system to strengthen their math instruction?
To be honest. It’s the wrong question to start with.
At least, it’s the question asked in the wrong order.
Before we can understand how to improve math in a system of 200 schools, we have to understand what it takes to change one math department, in one school, with one team of people who see each other every day. If we can’t name the conditions that make change work at that scale, multiplying our effort by 200 doesn’t get us change — it gets us 200 different versions of confusion, moving at 200 different speeds, for 200 different reasons.
Call it the math microcosm problem.
Get the small version right first, understand precisely why it worked, and only then ask how to hold that same shape at scale.
The six conditions every math improvement effort needs
When we break down what real, durable change requires — even in a single team — a few things show up every time.
A math coherence compass. A four-point decision framework that includes a shared vision and a clear objective the group is genuinely working toward together, not just nodding along to in a meeting. Vision without a compass is a poster on the wall. A math coherence compass tells people which way is forward when they lose their bearings mid-week.
Clear, measurable outcomes. Not aspirations. Not themes. Actual definitions of what “better” looks like, specific enough that two people looking at the same data would agree on whether it’s working.
Commitment, not consensus. This is where Janice Fraser’s work on leadership is useful. She argues that teams get decisions wrong in two opposite ways: they move too slowly chasing full agreement, or they move fast but shallow, with no real buy-in — and both are forms of waste. The alternative isn’t consensus but consent: asking not whether everyone thinks it’s the best possible decision, but whether it moves the group toward its outcome and whether people can live with it. That’s the difference between a decision that survives contact with a hard Tuesday and one that quietly unravels the first time someone objects.
Support structures that create epiphanies. People don’t change their minds because they were told to. They change because something challenged a belief they didn’t know they were holding, and they had the time, safety, and opportunity to sit with that discomfort. If a system doesn’t deliberately build in that time and opportunity and experience, the epiphanies simply don’t happen — everyone stays exactly as convinced as they started.
Realistic milestones and key results. Time-bound, measurable, sequenced so that each one builds momentum for the next. Big vision, small next win. Repeat.
Reduced fragility. If the whole effort depends on one champion or two believers, it isn’t a system change — it’s a personality. The moment that person leaves, gets reassigned, or burns out, the work goes with them. Durable change means ownership and decision-making are distributed widely enough that no single departure can collapse it.
Why change is hard in even a single math department
Even holding all six of those conditions inside a single school, with a single department, is genuinely hard. Getting everyone in one room to actually share the same understanding of the goal — not a version of it, not their own interpretation of it, but the same goal — takes real, sustained effort. Eliminating ambiguity is exhausting work precisely because ambiguity is the default state of any group of people.
And then there’s the relentlessness problem. Something else is always on fire. There’s always a version of “we’ll get serious about this next month, once things calm down.” Things never calm down. The teams that actually change are the ones who refuse to let today’s fire displace this quarter’s work — not because they don’t care about the fire, but because they’ve decided the fire doesn’t get to set the pace for everything else.
What happens when you scale math improvement too early
Leaders often look at what it takes to shift one school and assume that scaling it is a matter of more communication, more training, more resources. But scale doesn’t just add difficulty — it multiplies every point of fragility that already existed in the small version.
If your compass was fuzzy in one school, it’s fuzzy in 200 different ways across 200 schools. If your milestones weren’t specific enough to be unambiguous, you now have 200 separate interpretations of “on track.” If your change depended on one or two committed champions, you don’t have one point of fragility anymore — you have 200, and some of them will fail.
You cannot bolt shared ownership, durable decision-making, and realistic milestones onto a system after the fact, at scale, all at once. Those conditions have to be understood, tested, and refined where you can actually see and feel them — in the microcosm — before you ask them to hold weight across an entire system.
The question math leaders should be asking instead
So the question isn’t “how do we change 200 schools.” It’s: what are the actual conditions under which change works, for whom, and why — as observed in the smallest unit we can study closely? Once we can answer that with precision, scaling isn’t about doing something fundamentally different. It’s about protecting the same conditions, over and over, at a size where we can no longer watch every one of them happen ourselves.
Systems don’t change because leaders declare that they will. They change when the conditions for change are true in enough microcosms, often enough, for long enough, that the system has no choice but to catch up.
If any of this landed, our free Math Improvement Assessment is a good way to see which of these moves your own district most needs right now. It’s on our site whenever you want a clearer read on where your year is really headed.
