Year Five pupils at Tyneview Primary School in her home town had been working on a project about Cheryl's rise to stardom.
To mark the end of the school year, the kids were singing and performing a dance routine to her No1 hit Fight For This Love - when Cheryl herself walked in.
The pupils had spent six weeks perfecting the routine and then wrote to fellow Geordie Cheryl to ask for some signed merchandise to raise money for the school.
But Cheryl decided to go one better and came to see for herself how the youngsters were doing.
Cheryl gave the children lots of encouragement and told them how pleased she was to see their hard work.
She also chatted to teachers and posed for snaps with the school dinner ladies.
Tyneview teacher Robyn Bonnick said: "The whole topic, especially Cheryl's involvement, has been amazing.
"I now have 10-year-olds with a greater attitude to learning and the ethos of 'not giving up', as well as a whole new knowledge of the many job opportunities in the performance business.
"I am predicting that Tyneview will now produce some talented new set designers, dancers, singers and directors."