They need to create a profile on a page of A4 and include:
•A picture of the monarch
•The dates they lived
•What they are famous for
You may also want to add more detail about their success / failure, their children and the legacy they left for England.
The best ones will be displayed (their authors will be rewarded) so you might be best looking into a less well known king as I can only display one William the Conqueror and remember, you need to keep all the information on a page of A4.