Is what is known as a raffle ticket or lottery in school permissible, where it is given to an outstanding student and placed in a box for a random drawing to receive an incentive gift?

If the student did not pay anything for the ticket, but rather it was given to him for his excellence, then there is no harm in placing it in the box, participating in the draw, and taking the prize if he is selected. This is not considered gambling because the student does not incur any cost; rather, it is a type of lottery among excellent students for encouragement.