We’ve got everything from a boa constrictor to cupcakes, and TV cameras to anti-submarine ships to share with you.
So why not browse through our fond reminders of great Thornhill scenes over the years.
When it came to you school days, what are your memories?
Did you love your time in the classroom or did you loathe them?
Who were the teachers that inspired you and which subjects did you excel at?
Please contact Chris Cordner with your recollections.
9. All the world's a stage in 1975
Four schoolboys had their first experience of grand opera in 1975 when they were chosen to play pageboys in the wedding scene of Lucia di Lammermoor at the Empire Theatre. | JPIMedia Resell Photo: Sunderland Echo
10. Triathletes in 2012
Meet three star athletes from Thornhill School in 2012. | JPIMedia Resell Photo: Picture by Angela Burn
11. Enjoying the fete
Enjoying the Thornhill School fete in 1975. | JPIMedia Resell Photo: Sunderland Echo
12. They were rocking in 2013
Members of the cast of school's production of We Will Rock You in 2013 - and they are pictured in the new performing arts suite. | JPIMedia Resell Photo: Picture by Peter Berry