Pupils from Pelton Primary School in County Durham are running their own "city" for the day.
They elect their own mayor, apply for jobs in the shops and bank, and decide rules for citizens.
The Enterprise City concept started in the USA and the children in Spennymoor are the first to do it in the UK.
More top news
A teenager told a court today (July 27) that he wrote about planning a violent attack at his former college so people would talk to him.
The summer holidays have got off to a very damp start. Heavy rain fell in parts of the region overnight and it's continued today.
The largest free event in the North East attracted almost a million people to the seafront at Roker and Seaburn.