The new high school is a like for like replacement for the current school, the largest in Shetland, and will cater for a maximum of 1,180 pupils. It represents the largest standalone schools project across the whole of Galliford Try.
Pupils transfer to Anderson High School from both local primary schools and remote island primary schools. Pupils also transfer from Junior High Schools after S4 (age 16), leading to more pupils in S5 than in S4.
Morrison Construction was the main contractor for building the school and halls of residence.
Project Director Mark Clarke, said: "We're tremendously proud to have played our part in delivering the new Anderson High School and Halls of Residence. The new campus will ensure Shetland is prepared to cope with local demand for school places, and will benefit not only current and future students, but the wider community too.
"We look forward to watching the school develop and grow in this exciting new building."
Accepting the keys at today's ceremony was Mark Boden, Chief Executive of Shetland Islands Council and Phil McVey, Director, Hub North Scotland, the Council's development partner.
Mark Boden, said: "This is a landmark day for Shetland. The Council has realised the aspiration of many years and delivered a state-of-the-art modern school. It will provide an ideal learning environment for Shetland's children, and give school staff the best possible opportunity to deliver a first-class education.
"This has been the Council's biggest building project, with the construction contract costing £55 million. I want to pay tribute to the many organisations and hundreds of individuals who have contributed to the project; every single person's contribution was vital and is appreciated."