prompted

Writing prompts demand your best, original effort.

That said, the only acceptable ready-made set of writing prompts for use with high school students would have to be:

The University of Chicago's essay portion of their undergraduate application packet.

I want to write this essay:

How do you feel about Wednesday?

And I want to assign it to a class, and engage in thought-provoking discussions that foster meaningful argument support.

And I want that one kid to stay after class to ask if she can do a different topic:

Thursday