Donella Meadows identified twelve leverage points, places in a system where a small shift in one thing can produce large changes in everything else. She ranked them from least to most powerful. The least powerful: changing numbers, adjusting parameters like rules or quantities. The most powerful: changing the paradigm, the shared beliefs and assumptions that generate the system in the first place. Most interventions in education, in organisations, and in personal change operate at the bottom of this hierarchy. We tweak the policy. We adjust the consequence. And then we are surprised when the system produces the same outputs as before.
Why We Intervene at the Wrong Level
The leverage points that are most accessible are almost always the least powerful. It is relatively easy to change a rule, adjust a consequence, or update a policy. These are visible, tractable, and produce the immediate feeling of action. The leverage points that are most powerful are almost always the hardest to reach, changing the goals of a system, altering the rules that make certain decisions possible, or shifting the beliefs of the people inside the system.
In Designing Behaviour in the Classroom, the central argument is about leverage. The common approach to challenging behaviour, consequences, sanctions, removal, operates at the parameter level. It adjusts the costs attached to behaviour without changing the conditions that produce it. This is the equivalent of turning down the thermostat on a malfunctioning furnace: addressing the symptom without touching the mechanism.
“Real change lives at the level of structure, goals, and beliefs, not at the level of rules and consequences.”
Structural Leverage in Practice
At the structural level, the leverage lies in information flows, the rules that govern the system, and the way feedback is organised. In a school context, this looks like: ensuring that behaviour data is connected to contextual information rather than just incident records, so patterns become visible. Changing the rules so that restorative approaches happen before or instead of purely punitive ones. Designing feedback loops that allow students' experience of the school to reach the people who can change the conditions.
In an organisational context: restructuring meetings so that dissenting information reaches decision-makers before decisions are made. Changing incentives so that raising a problem early is rewarded rather than interpreted as negativity. None of these require changing the fundamental purpose of the institution. They require changing the structural conditions through which information moves and decisions are made.
The Belief Level: Where It Gets Hard
Meadows places the paradigm, the shared beliefs, values, and assumptions of the people inside the system, near the top of the leverage hierarchy because changing it produces the largest effects, and because it is the most resistant to direct intervention. You cannot instruct someone to change a belief. But you can create the conditions in which a belief becomes harder to maintain. Evidence that contradicts the model. Experiences that do not fit the paradigm. Relationships with people who operate from a different framework and produce different outcomes.
In my work as a training consultant and in my books, the goal is often exactly this: not to argue the reader out of their current model, but to create enough cognitive friction, enough evidence, enough specificity, enough named experience, that the model becomes difficult to hold without revision. That is writing as leverage. And it operates at the highest level of the hierarchy.
Bart Reevers