Plain English Meaning
It is the part of a lesson where the student actually flies or performs the task, while the instructor watches closely to see how well they do it and steps in if something goes wrong.
Full Definition
In the context of flight instruction, learner performance is the phase of training in which the student carries out a maneuver, procedure, or task while the instructor observes, evaluates, and is ready to intervene if needed. It refers both to what the learner does and to how well they do it, measured against established standards.
Context Anchor
Seen in flight instructor guidance when discussing how an instructor observes a student, gives help, and decides when the student is ready for more independence.
Derivation
Learner comes from learn, meaning to gain knowledge or skill. Performance comes from an older word meaning to carry out or complete an action. Together, the phrase points to learning shown through action, not just something the student says they understand.