Remember school dinners, detention, that one terrifying teacher, smoking fags and snogging behind the bike sheds?
For some they are distant memories bathed in nostalgia, for others a terrifying flashback to a time they'd rather forget.
And with the shape of education in Swansea continually changing, with schools opening and closing, many of those memories have been confined to the archives.
But we've been digging them out.
Here are some of the schools that we used to go to that are no longer there.
Mynyddbach
The all-girl comprehensive school in Penlan closed its doors in July 2001, bringing to an end more than half a century of single-sex education in the city.
Plans to merge Mynyddbach and the all-boy Penlan Comprehensive School to form Daniel James Community School were put forward meaning that both single-sex schools would close to create the new mixed sex school.
Mynyddbach was situated on the site where Daniel James Community School stands today and, alongside Penlan Comprehensive, made Swansea one of the last remaining areas in the country offering a single-sex education.
The head teacher Glyn Davies said at the time: "Generations of the same families have passed through both schools so this really is an end of an era for the area.
"There are a lot of people in Swansea, including members of my staff, who were educated at either Mynyddbach or Penlan.
"These include footballer Dean Saunders, Welsh rugby captain Mervyn Davies and West End singer Claire Hammacott. But I believe the community is now looking towards the new era and will pull together to make it work.''
Male toilets and changing rooms had to be built at the site, along with extra space for the 67 teachers who were set to work at the new school.
A Facebook group set up for former pupils to reminisce about their memories from the school has nearly 1,000 members.
Lynda McVeigh was a pupil at the all-girls school in the 1970's. She said: "I sat my O Levels in the really hot summer of 1976 and remember revising outside the sixth form block in the blazing sun.
"The head teacher was Miss Hunt who had taught my mother in Llwyn y Bryn, you did not mess around in front of her.
"Other teachers were Mr Eric Jones, who was our music teacher and I was in the choir with him, Miss Cuthbert, who taught us dance drama, and we won many competitions in the Eisteddfod with her.
"I went on two school trips, one to Italy and a choir trip to Mannheim where I stayed with a lovely family.
"We had a school reunion which was great. We met in the Cross Keys and it was great to see everyone. Some people had not changed at all."
Penlan Comprehensive School
The all-boys school closed its doors in 2002 after 46 years at the Heol Gwyrosydd campus before merging with Mynyddbach to form Daniel James.
As the school building was vacant there was talk of moving Swansea's only Welsh-medium primary school from Gowerton to the site in Penlan.
Curriculum manager John Twist, who was one of the two longest serving members of staff at Penlan, said at the time: "My feelings are mixed. I feel the time has come to move on as the number of pupils at both sites was declining. Now we will have a school of 900 or so pupils.
"It will be quite a transition. Many of us have taught here for so long that it is going to be difficult. There are still some pupils who do not wish to move and would have preferred to stay here."
Dillwyn Llewelyn
In the summer of 1999 shock plans were announced to combine Dillwyn Llewelyn with Dynevor to become Dylan Thomas Community School.
The merger was phased over two school years, with the first phase in 2001 merging pupils in years seven, eight and 10, while year nine pupils stayed at Dynevor School.
The second phase saw all pupils move to the Dillwyn Llewelyn site in 2002.
Terry Hampson was the longest serving head teacher in the area, having been at the school from the start until its final day.
He said at the time: "When I first arrived it was still being built. There wasn't even a roof on the place.
"I wanted to create a school that would serve Townhill and, in part, I think we did.
"The most pleasing aspect of all is the children who have gone on to be successful, and I don't just mean university success."
Dillwyn Llewelyn opened its doors in 1981, taking over the role of Townhill School which became home to the children of primary school age on the estate.
Kathryn Wallis had seen the school from both sides of the desk, as one of the first batches of pupils to arrive at the school and then returning as a teacher 13 years later.
Ilse Jones was a pupil between 1983 and 1986 and remembers the school's productions throughout the years.
"My most memorable thing has to be the productions the school did," she said.
"James and the Giant Peach was awesome and The Wizard of Oz was amazing, I got to play a munchkin.
"I loved drama lesson and would love to get hold of the tape of it.
"I personally loved the new built sports hall. I used to play squash in my lunch break.
"I loved most lessons but more woodwork and metal work."
Llwyn y Bryn
Based in the Uplands, Llwyn y Bryn was initially a private school after it opened in 1888 and was originally called Swansea High School for Girls.
After that it was renamed as Swansea Intermediate and Technical School for Girls before the school was made bigger in order to cope with an increase in the number of pupils.
It was damaged in bombing in 1940 but just over 10 years later in 1952 it was renamed Llwyn y Bryn Secondary Girls' School and then in 1978 it amalgamated with Dynevor School.
Today, the campus is used by Gower College Swansea and offers students the chance to study fashion, music, media and art and design.
It now has specialist art studios, digital darkrooms, two recording studios and five music practice rooms.
Manselton Primary School
After teaching generations of children in the Manselton area, the primary school closed in 2012 after 27 years.
The actual building, which still stands today, has been a part of Manor Road for more than 100 years.
Manselton Primary School was merged with nearby Cwmbwrla Primary School, which also closed, to form Burlais Primary School in Cwmbwrla.
John Jones, the head teacher at the school at the time, said: "We are looking forward to Burlais opening in September and to a bright future for Manselton and Cwmbwrla.
"The building has been here for 110 years. Before the primary school it was an infant school and before that it was part of Pentrehafod Comprehensive and prior to that it was a boys and girls school.
"It is steeped in history and an iconic building in Manselton."
In recent years young intruders have been spotted in the disused school forcing the police to intervene.
There have even been reports of children going into the building with backpacks and not leaving until the following morning.
Daniel James Community School
The comprehensive school which opened on the site of the former Mynyddbach opened after the all-girls school merged with Penlan Comprehensive.
Daniel James closed in 2010 due to plummeting pupil numbers and poor standards of education despite a petition being launched in a bid to save it.
The Save Daniel James campaign group submitted a lengthy objection portfolio consisting of thousands of letters and signatures to try and prevent the closure.
Pupils even marched from Portmead to Bishop Gore School to demonstrate the distance it would be for the pupils that were facing a move to the comprehensive in Sketty.
Ceinwen Thomas, a governor at Daniel James, also fought the closure. At the time he said: "It's a local school and many pupils walk - even if they live in the Penderry area because not everybody has transport."
At the time pupils and parents said that closing the school would "rip the heart out of the community" and would "have a negative effect on pupil attendance" as they would have further to travel to school.
Four years ago the council announced that the site could be sold as it made "no sense" to keep the former site empty.
Cwm Primary School
The primary school in Bonymaen shut in 2010 after 150 years due to falling pupil numbers and crumbling buildings.
Staff, pupils, parents and governors mounted a huge campaign against the closure, with around 1,500 people signing a petition and protests held outside Swansea Council and the Senedd in Cardiff Bay.
Head teacher Amanda Taylor said around the time of the closure: "People have been extremely upset. We had children visibly crying in assembly.
"Some of them got up and went to their teachers for comfort. There were lots of questions from children about why their school had to close."
While the chairman of governors, John Winchester, called it "a blow for the whole community of Bonymaen, not just the school".
There were plans for the Welsh-medium primary school, Cwm Glas, to move into the empty site but instead it is now located in Winch Wen.
Emmanuel
Emmanuel Grammar School, attached to the Bible College of Wales in Derwen Fawr, closed its doors in 1994.
Since then, a number of reunions have been held where former pupils have met up to look back at their time at the school.
Cath Mogford, who was a pupil at Emmanuel, said: "It was a friendly, caring school with a strong emphasis on Christian values.
"Pupils whose parents were missionaries overseas boarded there but there were many more day pupils.
"The grounds were lovely, I loved walking around them at break time and having houses created a sense of working together as a team and a shared goal.
"Uniforms were smart, ties and blazers, and everyone was the same.
"I made some lifelong friends there and it's amazing how often through life I've come across others who have some connection with the school/Bible college.
"Whenever I pass that way now and see the new houses built there in my mind I'm transported back."
Michael Griffiths, was a pupil at the school and ended his time there in 1992.
He said: "I was at the grammar school for seven years, from the first year to the upper sixth.
"My sixth for class was very small because of the declining numbers and there were only 16 students in the sixth form when I was there.
"Miss Potter taught us Latin from the first year to the third and she also taught A-Level history. She was a really strict lady that lived in the Bible college.
"Phil Rees taught us PE and his sister taught us English. Miss Thomas taught me history from first year to fifth year and Mr Williams taught us biology from first year to fifth year, he was a really nice guy.
"Miss Rush taught art and she seemed to be 100 when I was there but was probably one of my favourite teachers.
"Our school ski trips were always great. We went to St Anton in Austria and Avoria in France."
Cwmbwrla
Cwmbwrla Primary School closed in 2012 and merged with Manselton Primary School to form the £8.25 million Burlais Primary School in the lower section of Cwmbwrla park.
The merger was intended to replace the schools' deteriorating Victorian-era buildings with a campus fit for 21st century primary education.
Welsh language campaigners had called for the school to be developed into a Welsh-medium primary school, to meet demand for education through Welsh in north and central Swansea.
But Swansea Council said the school would need almost £2 million worth of repairs and further modernisation to bring it up to standard, and one reason it had closed Cwmbwrla School was that it was not fit for modern education.
Work started on the state-of-the-art Burlais Primary School in 2014 and it offered 525 places alongside a nursery and a special teaching facility for children with speech and language difficulties.
