General:
* The pupils in Mrs. Smith's class are very enthusiastic about learning.
* The school has a strict dress code for all pupils.
* The teacher asked the pupils to raise their hands if they understood the lesson.
Referring to the eye:
* The doctor dilated her pupils to examine her retina.
* The bright light caused his pupils to constrict.
* The size of a person's pupils can be affected by their emotional state.
Figurative:
* The writer's words were like magic, captivating the pupils of her readers.
* The artist used light and shadow to create depth in the painting, drawing the pupils of the viewer to the focal point.
Let me know if you would like to see some more examples!