According to the police a complaint was lodged yesterday over the incident and an investigation was subsequently launched.
Investigations had revealed that the girl had been raped by the three students within the school premises in February this year.
The three students were arrested yesterday and will be produced in court today.
Meanwhile the police media unit said today that a suspect has been taken into custody for sexually abusing a 13 year old boy in Urubokka in the south of the country.
The incident had taken place in April but a police complaint was lodged over it last evening. The suspect is to be produced in court today.