Step 1:
The Law of Detachment says that we must detach ourselves from the result or outcome in order to allow what we desire to materialize in the physical universe. When we have done our part, we must learn to let go of the outcome for things to materialize. And once we do let go, it's when things materialize.
Step 2:
If the roads are icy, then the school will be closed. The school is closed
Because
The roads are icy.