It was found in 1996 as the Royal College of Phoenix and was renamed in late 1996 after Sir Abdool Raman Osman, the first Governor-General of Mauritius.

Following that, more blocks were added and by the end of 1997, the school became a complex with a ground area of 1.6 hectares (4.0 acres).

In January 2006, consequent to a policy decision of the government, the school again started admitting pupils in Form 1.

End of year 2007, the school became a National College and changed its name from Sir Abdool Raman Osman State Secondary School to Sir Abdool Raman Osman State College.

It welcomed 180 new students who performed well in the National Certificate of Education (NCE), including for the first time, 90 new girls.