Donna Briggs, international coordinator at Stuart Road School, said: "This is the third time our school has had teachers visit us from Ghana but we have been going out there for four years now."
During their eight-day trip, the group taught at the different schools and were taken to local attractions including the Eden Project, Mount Edgcumbe and Tenpin bowling.
Tracy Beards, assistant manager at the bowling alley, said: "They really enjoyed it."
She added: "They were completely overwhelmed by the fact that we have a machine that makes candy floss."
The Ghanaian eight-year-old girl, one of the head teachers' daughter, spent the week with year three pupils at Stuart Road School.
The students from Plymouth get involved with the project by sending letters and e-mails to the Ghanaian schools.
The trip was jointly organised by the three schools and was funded by the British Council.
The pupils at Stuart Road are busy putting together a special scrap book to document the visits.
Mrs Briggs said: "It will be nice if more children can add to it later." She added: "We are hoping to have more visits in future."