Ask HN: Is there any archive of user stories for students

I am trying to teach programming for a friend, and found myself searching for some sort of database of complete set of user stories for students, and got nothing. I mean, something from the basics "Hello World" and FizzBuzz, to the ubiquitous "Polish Calculator", up to simple games like tic-tac-toe functional requirements written as stories. Does anybody knows about some repository like that ?...

The ones my googling skills got, are empty:

  - https://github.com/solid/user-stories
  - https://github.com/UniversalViewer/user-stories

tks !