Former pupils and staff are among those featured at the reunions in Portrush Playhouse, Ballymoney Rugby Club and the Lodge Hotel in Coleraine.
Have a closer look to see who you recognise reminiscing about school days.
5. RETRO
Former Cross & Passion Class of '83 pupils pictured at a School Reunion held in 2010. Photo: NI WORLD
6. RETRO
Past pupils of Coleraine Girls Secondary School who left in 1992 pictured during a reunion evening held at The Playhouse in Portrush in 2010. Photo: NI WORLD
7. RETRO
Bone Idol who played at Ballymoney High School Class of 98 School Reunion held at Ballymoney Rugby Club in 2010. Included are Ricky Cochrane on Vocals, Mark Lundy on Bass, Alan Brown on Guitar, Drew Hammond on Guitar (Absent from Pic) and Drummer Robin McKay. Photo: NI WORLD
8. RETRO
Dalriada Class of 77 pictured at a reunion held at Ballymoney Rugby Club in 2007 Photo: NI WORLD