What the move is
Before asking what you want a situation to do, ask what it is already inclined to do. The move reads the present as a set of tendencies. Some outcomes are easy from here and some are hard. A plan that works with the easy ones needs little force. A plan that works against them needs a great deal, and usually loses.
It has two halves. The first maps relations: who is tied to whom, what flows along each tie, and how much trust is in it. The second reads tendencies: where the school settles, what is drifting slowly, and what is already emerging at the edges.
The idea behind it
A list of stakeholders with columns for interest and influence treats people as separate things. The same people in a different arrangement give a different result, so the arrangement is what you map. A tie of spent trust between a department and its senior leaders will bend any plan that runs along it.
Situations also have states they return to, called attractors, and slow variables that decide when they tip. In schools the attractors are usually habits of checking and grading, not policies. The slow variables are things such as trust, workload and how well students write without help. They are rarely counted, and they decide most outcomes.
Why it works
It changes timing and scale. Near a threshold, a small, well-timed move can travel a long way. Where the school is deeply settled, a large push gets absorbed and the plan reports success anyway. Knowing which is which saves effort and goodwill.
It also finds the work already happening. Most schools have someone doing what the plan wants, outside the plan. Reading the disposition finds that person before the plan runs over them.