Pupils, staff and former students joined in the celebrations as Pebble Brook School marked its 50th anniversary.
A surprise flash dance and a colourful 1960s theme made for a memorable day at the school, for children with learning needs.
A clock was unveiled, overlooking the playground, and headteacher David Miller was thrilled to see so many old faces helping the school begin a new chapter.
Mr Miller, who dressed up in a Beatles Sergeant Pepper costume for the day, said: “The time piece marks our 50 years but it’s also marking a change.
“It’s the beginning of a new and exciting period.
“We want to continue to grow and ensure that the pupils get an individualised curriculum that prepares them for adult life.
“There were over 20 ex-pupils who attended - more than we expected - and they were a delight to meet. We hope they keep in touch. We have a great community spirit here – everyone knows each other.”
Mr Miller, who has been at the helm for four years, said some of the school’s landmarks include doubling the size of the school and taking just 19 months to show Ofsted it should come out of special measures.
In fact, the school’s boarding provision achieved a ‘good’ rating this year and Mr Miller said he was ‘delighted’ with the grading.
The 1960s flavour on Thursday represented the school’s first era and there were sports day races, a bangers and mash banquet and a staff versus pupils rounders match.
Pupil Sam Hatt, 14, and Gill Mead, who has worked at the school since 1972, unveiled the special clock.