Secondary school provides many with some of their best, worst, funniest and most embarrassing times of life.
Everyone has a horror story of when a chemistry experiment went wrong or the person they fancied kissed someone else. And most will have a tale or two about the ridiculous excuses they used to get out of homework.
So with #secondaryschoolmemories trending on Twitter, we decided to take a look at some of the more memorable moments of school:
@Isabel_HB: "Setting the fire alarms off to get out of lessons."
@benduggan: “Crafty fags behind the bike shed (an actual bike shed), my Science teacher's red underwear, geography field trip, Shakespeare.”
@GrandadjFreeman: "Feeling like God when you found a games website that wasn't blocked."
@Sir_Scribbles: "Marvelling at the wonders of a flip phone with a coloured screen..& a camera!! "Surely technology has peaked! we thought."
@GrantEvans1992: "Knowing the dinner lady and getting everything for 50p."
@youkneecorny: "TEACHER IS COMING!!! *class becomes an utter chaos* the second teacher walks in, the class becomes dead quiet."
@Folusho_OG: "When you used to plan to sit beside the smartest people in class during tests."
@Jo_AlerionWish: "Pokemon."
And here's what our Huffington Post UK team had to add:
Luke McGee, assistant blogs editor: "My friends used to call me 'fatty queer cakes' as I had the physique of an emperor penguin."
Sarah Dean, assistant entertainment editor: "My head-teacher was the http://www.dailymail.co.uk/news/article-1202847/Staff-mutiny-school-run-head-lover.html 'best-paid litter picker in Britain', who also turned out to be having an affair with the deputy-head who was dubbed 'the dwarf'."
Paul Vale, deputy news editor: "Pulling a handstand on top of Stiles' Wolf Mobile."
Felicity Morse, intern, said: "When I first started school I had to eat my lunch on the toilet as I didn't know anyone. That is, until the toilet cleaner kicked me out as apparently we weren't allowed to do that."
Jody Thompson, blogs editor: "My best memory was going on the game show Blockbusters and asking 'for an E, please Bob'."
Another staff member, who (understandably) wishes to remain anonymous, said: "I was in Year 10 and one day found myself wearing a pair of pants that had lost all their elastic. I put a sanitary towel on but it fell off as I was leaving the classroom. I saw it poking accusingly out of the trouser leg but there were children storming in and out so I had to remain like a statue in order to retrieve the offending soiled thing before anyone discovered it. I crouched down and had to stash it in my bag. Luckily I don't think anyone saw."
What's your one school memory you'll never forget?