Students at Sudbury schools don't differentiate between work and play; learning and fun. Dividing a student's time between "classes" and "recess" communicates the message that work and play are separate; that classes and learning is "work" and that recess and fun is "play". Sudbury students don't have this differentiation, they play anything and everything with passion and intensity. They work at play like musicians work at music, like doctors work at medicine, and they play at work like writers play with language and carpenters play with wood.
The passion that students bring to their play is the same passion that they bring to their work. The seriousness that they bring to their work, they bring to their play. There is no difference between the two.