Morrison Construction will build the new Anderson High School for Shetland Islands Council under the hub North Scotland contract.
The new four-storey high school will have capacity for up to 1,180 pupils to replace the existing high school on the Clickimin site in Lerwick, which is Shetland’s main secondary school. There will also be a three-storey 100-bed boarding block.
Under the deal, Galliford Try Investments is investing £1.7m in the funding for the project.
Project architect is Building Design Partnership (BDP).
Galliford Try executive chairman Greg Fitzgerald said: "The new Anderson High School represents a significant investment by the Shetland Islands Council on behalf of the community it serves and we are delighted to be working with it to provide a facility the people of Shetland can be proud of.
"This latest contract complements our growing portfolio of construction projects for the education sector and through working closely with all stakeholders, we will deliver a building with first-class facilities which will greatly benefit the local community and enhance the facilities for education in the region."