The Problem With Telling Them
A student who cancels because you told them to has not learned to cancel. They have learned to ask you. That works right up until the first flight where you are not standing there, which is the flight the training was for. The instructional goal is not the correct answer on any given morning — it is a reasoning process the student can run alone.

Make the Reasoning Visible First
Ask for the assessment before you offer yours. Have the student name the factors, weigh them, and commit to a call while you say nothing. What you are looking for is not whether they land on your answer but whether they considered the things that mattered — a student who reaches your conclusion having ignored the destination crosswind got there by luck, and the debrief should say so.
Separate the Call From the Process
Grade the process, not the outcome. A well-reasoned go on a day that turned out bumpy is better work than a lucky no-go with no reasoning behind it. Saying this explicitly is what gives a student permission to show you their actual thinking rather than the answer they believe you want.
What a Written Assessment Adds
A structured assessment gives a debrief something concrete to work from: the factors that were on the screen, the weights they carried, and what the student acknowledged before flying. It replaces "what were you thinking" with a record. FlightReady's assessments flow into a shared fleet feed for exactly this — so the conversation is about a documented decision rather than a recollection of one. The call itself stays with the pilot in command, which for a student under supervision means the call stays a teaching moment rather than an instruction.
