There were all sorts of reasons for them celebrating.
Some were celebrating the World Cup, others were having fun as they held a reading party and others dressed as princesses for their party.
A summer party is also among our retro scenes.
The question is, were you among them? The only way to find out is to take a look at our picture selection and find out more.
1. Party time in 2005
It's teatime at the Monkton Infants School party in 2005 and special biscuits were on the menu. Photo: CL
2. Back to 2010
A reading party at South Shields library got loads of visitors in 2010. Can you spot anyone you know? Photo: CL
3. Party time at Harton Infants
Back to 2010 and these pupils were celebrating the life of Harton Infants School. Who do you recognise? Photo: IB
4. A big cheer at Bede Burn
Having fun at the Bede Burn Primary School garden party in 2010. Remember it? Photo: IB