This kind of education benefits the student in at least two ways. First, he is able to reflect upon course material using personal experience. He is more likely to be interested in what is being taught, because the material is more relevant to him. Secondly, he is able to supplement his extracurricular interests with the knowledge that he learns in class. By making connections between what he learns in the classroom and outside of it, he has the opportunity not only to build upon his understanding of class material, but also of his own recreations and passions.
This should be one of the primary purposes of teaching and learning: to build upon the students' existing experience and curiosity to provide a practically grounded and relevant education.