Once the students have answered all the questions, they turn in their sheet and the teacher keeps those in the classroom at all times.
As happens with the Circling with Balls activity and the Anne Matava Questionnaires, most students, when they understand that this is not a joke assignment and that people are really going to be talking about what they wrote in class in the target language, ask for their sheets back. I would refuse this request. It completely increases the quality of answers given when the next Star of the Week question sheet is given out the next time.
Sabrina could you comment on how many Star of the Week 10 question sheets you and Nina get through in one semester? (See you at East High later today for Paul’s Learning Lab!)