While the kids at Tyneview Primary School in Newcastle were singing and performing on her song 'Fight for This Love', the 30-year-old singer walked in and surprised them, reported Sun online.
Cole told them how pleased she was to see their hard work. She also chatted to teachers and posed for pictures.
One of the teachers at Tyneview, 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," she said.