Jean-Paul Yoko attended a preschool graduation for his girlfriend's daughter <a href="http://ireport.cnn.com/docs/DOC-983537">Adiena</a> at Ecole Guyot in Manitoba, Canada, where each child received a graduation certificate and contributed snacks and juice to the reception. He says a preschool ceremony "gives some sort of closure to the teachers who have worked so hard with these kids throughout the year."