This is given in subject section of this website:

This line is spoken by Wasserkopf, a former pupil of the school, who is demanding a refund of his tuition fees from the school. He believes that he did not receive the value of the money he paid for his education, and that is why he is demanding a refund.

The reasons for Wasserkopf's dissatisfaction with his education could vary, but it is clear that he feels that he did not gain any valuable skills or knowledge from his time at the school. He may feel that the teaching was inadequate, or that he was not given the necessary support and guidance to succeed.

This line highlights the importance of ensuring that students receive a quality education that meets their needs and helps them to achieve their goals. It also raises the question of what constitutes a fair value for education, and whether it is possible to put a price on the knowledge and skills that students gain.