Scientists have shown that the so-called "Mozart effect" of music in young children is just a myth. This popular idea said that exposing young children to classical music improves their ability in non-verbal tasks. Nevertheless, researchers did find a more interesting effect of classical music on students.
Ref: Science News, 6/19/04, p. 389, B. Bower, "Tuning Up Young Minds." Painting: Young Mozart before Emperor Francis (PD)