From the stress of results day to the buzz surrounding the school formal, they show life as pupils experienced it two decades ago.
The pupils pictured will be in their 30s now, perhaps with children of their own.
But, if that’s you, this trip down memory lane will make you feel once again like a spotty teen whose biggest worries were getting your homework done and plucking up the courage to talk to your school crush.
This retro photo gallery features pupils and teachers at schools around Northern Ireland during the mid-noughties.
Star pupils who excelled in the fields of academia and sport, kind-hearted youngsters doing their bit for charity, and BFFs unwinding outside the classroom are all pictured in these evocative images.
There’s even an ex-pupil among them who was picked to appear alongside Johnny Depp in a Hollywood film.
Can you spot yourself or an old school friend in these photos? For more Northern Ireland nostalgia, check out this look back at noughties days out.
9. Young engineers
Gerry Hughes from Sentinus and Claire McMahon, head of technology, with year 8 pupils at St Mary's High School during an engineering day in 2006 | National World Photo: Geoffrey Cousins
10. Halloween dangers
Pupils at St Paul's Junior High School pictured following a talk about Halloween dangers, organised by the Craigavon Community Safety Partnership, in 2006. They are seen with Sarah Wilson, Lynette Burke and Constable David Smith, from the partnership, plus principal Sean Flanagan. | National World Photo: Geoffrey Cousins
11. 125th anniversary celebrations
Bryan Jackson, from Ashfield Boys; Raymond Waugh, from Orangefield High School; Karl Stanfield, from Wellington College; and Suzanne Stewart, from Ashfield Girls School, pictured at the Glentoran FC 125 years in the community celebrations in 2007 | National World Photo: Diane Magill
12. You're hired
The Apprentice semi-finalist Ansell Henry with Nicola Harkins, from Dundonald High School, and Kathryn McKinstry, from Our Lady of Mercy, North Belfast, in 2006. They were among the budding business leaders taking part in the KEY programme to be rewarded with a trip to the Canadian Junior Achievement Conference held in Ottawa, Ontario. | National World Photo: Diane Magill