What are two common references to students named after parts of our head:

The connection between a student and the center of the eye is a fascinating linguistic journey. Both meanings of "pupil" share the same etymological roots, stemming from the Latin word "pupilla," which translates to "little doll." The dark opening in our iris was named this because when you look closely into someone's eye, you can see a miniature reflection of yourself, like a tiny doll. Similarly, a young student was considered a "pupil" in the sense of being a ward or orphan under the care and guidance of a tutor, a small figure being looked after.

While one term is rooted in ancient history, the other is a much more direct and modern metaphor. Calling a particularly studious or intelligent classmate "the brain" is a common colloquialism in schools and popular culture. This nickname directly equates the person with the organ of intellect, suggesting they are the source of knowledge or the cleverest member of a group. So while one term comes from a poetic observation of reflections, the other is a straightforward nod to the seat of all our thinking and learning.