Anne Wilson, headteacher at Fircroft Primary School, said Imani Green, who suffered from sickle cell anaemia, "coped very well" with her condition which forced her to stay indoors at play time to avoid getting cold.
The school had granted her permission to spend time in Jamaica because the warmth was known to be better for health.
Mrs Wilson told Sky News:
We felt it was in Imani's best interest to be there rather than here at this time. Today and for the next few days and weeks it's going to be difficult for them but we're here to support them.
More top news
Fast-melting Arctic sea ice has forced some 35,000 Pacific walruses to retreat to the Alaska shoreline.
One of the most notorious Mexican drug lords still at large has been captured by soldiers at a seafood restaurant in a picturesque town.
A dossier of online abuse directed at the parents of Madeleine McCann is being examined by police.