Plain English Meaning
The instructor's skill in judging how a student is doing and giving useful feedback that helps them get better.
Full Definition
The instructor's ability to evaluate a student's performance, knowledge, and progress against established standards, then provide feedback that helps the student identify what was done well, what needs improvement, and how to improve it.
Context Anchor
Seen in flight instructor training when discussing how instructors evaluate student progress during lessons, practice, and reviews.
Derivation
From the Latin 'assidere,' meaning 'to sit beside.' The image is of someone sitting alongside another person to weigh and judge their work — which captures the instructor's role: not standing in judgment from a distance, but working alongside the student to evaluate progress and guide improvement.
Why Pilots Care
Effective assessment skills allow instructors to tailor training, prevent gaps in knowledge, and build safer pilots.