On June 5, 1970, part of the £1million Sunderland building was left in smouldering ruins after a fire.
Flames ripped through the top floor of a science, art and commerce block at Thornhill School.
Yet somehow, two thirds of the block were back in use by the time pupils returned after the six weeks holidays.
Tell us if you saw the drama unfold. Email [email protected]
Have you got a story you want to share with our readers? You can now send it to us online via YourWorld at https://www.yourworld.net/submit/.
It's free to use and, once checked, your story will appear on our website and, space allowing, in our newspapers.

1. Linda's memories
“I remember getting sent home and my mam not believing there was a fire at the school": Linda Slater. | se

2. Back in the car
“Remember it well. Me and my best friend Mark Byrne jumped back into his mams car and off we went": Stephen Wardle. | se

3. 'My wonderful uncle'
That fireman in the photo is my wonderful Uncle Jack Stubbs": Carol Fulton. | se

4. 'Mother's slight disbelief'
“I remember my sister coming home on the morning saying the school had been on fire and they got sent home. I remember my Mother's slight disbelief at first because in those days there was no Internet or mobiles to communicate such things.": Lesley Cheal. | se