They captured pupils at work in classrooms, in sports activities, music celebrations and much more. Are you pictured?
9. Preston high schools
Gemma Collinson and Scott Croly of Longridge High School, working on a CD at Preston College in 1998 Photo: Kevin McGuinness
10. Preston high schools
Kathryn Rowland, 13, left, and Sarah Jeary, 15, from Tulketh High School, Preston, with (from left) Kieran, Nathan and Mark from boy band Next of Kin in 1999 Photo: John Hughes
11. Preston high schools
Healthy eating at Ashton High School, Preston in 1998. Pictured are: Kerry Bagnall and Derrick Brewer-Dalziel with some fruit kebabs Photo: Kevin McGuinness
12. Preston high schools
Karl Broxton, 12, from Christ the King High School, Frenchwood, Preston, takes a close look at The Lost Town by Simon Lewtry during a visit to the Harris Museum and Art Gallery in 1999 Photo: Lindsey North