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.
21. Training day
A member of the Royal Marines Commandos supervises Lurgan Junior High School pupils as they complete one of the personal development tasks during a training day at the school in 2007 | National World Photo: Geoffrey Cousins
22. Save our school
Teachers, pupils, councillors and parents release balloons outside Lisnasharragh High School to highlight their Save Our School campaign in 2006. It was one of four schools set to close because of falling pupil numbers. | National World Photo: Diane Magill
23. In the kitchen
Magherafelt High School year 10 students Rachel and Leah help decorate the homemade cakes of Matthew Austin and Richard Palmer, pupils from Desertmartin PS, during a visit as part of their school's induction programme in 2006 | National World Photo: Adrian Robinson
24. Showing their support
Pupils from Orangefield High School, Ashfield Boys, Ashfield Girls School and Wellington College are the first to try out the new dedicated Family Enclosure at the Oval as part of Glentoran FC's 125 years in the Community celebrations in 2007 | National World Photo: Diane Magill