Judges recognised Allan Murray Architects Ltd for completing a project that “demonstrated skillful resolution of a complex brief”.
They commended the space which was created despite the limited area of the site as well the links between the full-height open plan atrium, the main public areas, the assembly hall and the playground.
Education Convener Councillor Ian Perry said: “We’re delighted that the new high school has been recognised with this prestigious award.
“A lot of planning went into the innovative design on what is a constrained site and the judges were particularly impressed with the impact the atria has on the open spaces within the building.
“This is the third new high school we have built in Edinburgh in recent years and is an extremely high quality building providing a first class education for all the pupils.”
Work started on the school in November 2014 and was opened to pupils earlier this year.