This latest collection of pictures from the Mid Ulster Mail archives show the pupils all dressed up for the event and it certainly looked like a great night. Check out the photos and see who you recognise.
If you fancy seeing more pictures from a big night out in years gone by, check this out too: 13 pictures to turn the clock back to a great night out in Mid Ulster in 2007
5. Perfect coordination
Dressed to impress at the Cookstown High School formal were David Thompson, Debra McKeown, Jayne McCammond and Craig Allen. Photo: Simon Robinson
6. Enjoying the formal
Alastair Thom and Rebecca Sloan pictured at the Cookstown High School formal held in the Glenavon House Hotel in 2006. Photo: Simon Robinson
7. Caught on camera
At the Cookstown High School formal were Colin and Vicky. Photo: Simon Robinson
8. Smiles for the camera
Stephen Allen and Anna Ferguson at Cookstown High Formal in 2006. Photo: Simon Robinson