Homework

You may be looking for the short story.

Homework was work assigned to students to complete away from classes and lectures.

In Farringham, 1913, Hutchinson forced Tim Latimer to do his homework for him. (TV: Human Nature)

While rambling about how time never affects him, the Eleventh Doctor claimed he could help Rose Tyler with her homework. (TV: The Wedding of River Song)

It is most likely that he did not follow through with this.

In 2005, Sally Sparrow wrote an essay about her Christmas holiday and her conversation with the Ninth Doctor, whom already had read the finished essay, through a video cassette recorded in 1985. (PROSE: What I Did on My Christmas Holidays by Sally Sparrow)

In the early 21st century, Janie used Graphon Narmolis, disguised as a pencil, to write her homework on the Solar System.