The cost includes the demolition of the Margaret Carnegie Hostel and Boys Hostel which will make way for the new building.

The Scottish Government awarded the Highland Council £3m towards the price in 2013.

There had been objections that the Carnegie Hostel was of historical significance, and that the £8m could be better spent on other island schools.

Described as a “large contemporary school”, the development is expected to open to pupils in 2017.