All you need to get student of the week up and running!
Send this letter home with the student the week before it is their week to be the Star Student. I usually go in alphabetical order for me (and the students) to expect who is next.
The students fill this sheet out with their parents and bring it in the week they are assigned to be the Star Student. The Student of the Week can have special privliges such as line leader, wearing a special bracelet, or bringing in a stuffed animal for the week.