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.
5. Champions
Lurgan Junior High School girls footballers receive their Northern Ireland Cup medals from Glenavon star Atiba Charles in 2006. Pictured with the pupils are principal Joseph Johnston, PE teacher Linda Dugan, and coach Roberta McNally. | National World Photo: Geoffrey Cousins
6. Champion quizzers
The Killicomaine Junior High School team who won the Home Accident Prevention Group table quiz at Lough Neagh Discovery Centre in 2007. They are pictured with Mayor Robert Smith, chairman Winston Humphries, and teacher Robert McVeigh. | National World Photo: Geoffrey Cousins
7. Prize night
Trophy and special award winners at the St Mary's High School prize night in 2007 | National World Photo: Geoffrey Cousins
8. Finalists
The Monkstown High School team, pictured after reaching the final of the Northern Ireland Under 16 High School Hockey competition in 2007 | National World Photo: Geoffrey Cousins