They captured pupils at work in classrooms, in sports activities, music celebrations and much more. Are you pictured?
13. Preston high schools
Alex Jones, 12, and Carly Chippendale, 12, pupils from Tulketh High School, Preston, at work in the North West Water mobile visitor centre in 1999 Photo: Lindsey North
14. Preston high schools
Singin' the blues... Kathryn Brown, 12, left, and Abigail Bunn, 13, from Tulketh High School, Ingol, Preston, during their music class with Manchester musician Kenton Mann in 1998 Photo: John Hughes
15. Preston high schools
Children of the wasteland... (from left to right) Pamela Unsworth, Sarah Trinick, Louise Smith, Jenna Bath, Emily Barlow, Madeline Pike, Katie Lowe and Nichola Rostron, pupils at Broughton High School, near Preston, who are performing in 'My Mother Said I Never Should' by Charlotte Keatley in 1998 Photo: John Hughes
16. Preston high schools
Year 10 pupils from Priory High School in Penwortham, near Preston, from left, Emma Osborne, 14, Michelle Atkinson, 15 and Fallon Fell, 14, who are part of the team who have made celebrity chairs for when the school takes over Heathcoates Brassarie for a charity millennium event in 1999 Photo: Ian Robinson