They have been getting used to the new campus in Brunswick Park, near Whetstone.
It has new design technology classrooms, 4G astroturf pitch, auditorium and drama and music facilities.
A 12-year project to find a site and get planning permission has finally been completed with construction finished earlier in the summer.
The scheme for an Orthodox church school has been a vision by a group of parents since 2013, led by the late Yiannis Pareas, the founding chair of governors.
A formal opening is pencilled in for November for the site, reportedly home to the first and only state-funded Greek Orthodox secondary school in Britain.
“Our prayers are finally answered after 12 years,” Russell Education Trust chair of governors Mary Karaolis said.
“This is the culmination of a great deal of planning and hard work by the school, the Orthodox Church and the Department of Education.”
Education secretary Bridget Phillipson is visiting the school for its formal opening on November 28.
Headteacher Chris Martin said: “We are starting the school year by establishing ourselves in our new permanent home. Part of the process for the grand opening is the school being blessed by Archbishop Nikitas.”
The school, named after St Andrew the Apostle, serves families from all backgrounds across north London and the wider Greek and Cypriot community.
The land was provided by the Comer Group as part of the wider development of the North London Business Park neighbourhood.
The school opened with its first Year 7 pupils in 2013 in converted office buildings.
Planning permission was finally given by Barnet Council in 2022 for its own purpose-built campus with state-of-the-art technology and sports facilities.
Parents can visit the school with their children in the first half-term, while prospective pupils for next year’s intake can look round on an open evening on October 7 from 5.30pm.
