But pupils at one Fleetwood primary school are having great fun learning the true meaning of messy play indoors and out.
The early years uniform was swapped for jogging bottoms and sweat tops so they can quickly change to go outdoors and a special hut houses their outdoor clothing.
Mr Fann said: “The children are happy and want to come to school. “We have a carefully thought out curriculum and the children really enjoy it. "
The headteacher added: "They like being outdoors experiencing what it is like to do things like building dens or mud pies with other children while also developing their language. "
"Children cannot develop a vivid imagination without a rich palette of experiences,” said Mr Fann.