Before the children receive their diploma they first must demonstrate what they have learned during the lessons and show that they have mastered the required techniques to obtain the diploma. This demonstration sometimes takes place at different pools than where the lessons were taught. Children swimming at Sherpa or in Amersfoort can do their demonstration in their regular pools. Those who usually swim in Blaricum will have to go to Amersfoort and those from Amsterdam will perform their swimming demonstration in De Mirandabad. Before this official demonstration the children will first have a practice swimming session, so that they will know exactly what is expected of them and the ones swimming elsewhere have the opportunity to familiarize themselves with the new pool. When the practice swimming session goes well the children can demonstrate their skills two weeks later at the official demonstration, where they will receive their diplomas.