St Joseph’s School was founded by the Dominican sisters, who arrived from Ireland to teach in Queenstown in 1883.
Perhaps remarkably, given Queenstown’s exponential growth, the school’s still on the same site, and now boasts 143 pupils, about 30 shy of its maximum capacity.
Principal Alan Grant said there was still "a little bit of room to grow where we are", and while there had been talk for a long time about where the best place for the school was, "we love where we are".
Included among those who gathered at the school on Tuesday to celebrate its birthday were two generations of one family with a 99-year connection to the school.

Four older members of his family had also been educated at St Joseph’s.
Marney went on to attend St Dominic’s in Dunedin and, after high school, went to teacher’s college before returning to Queenstown, where she did some relief teaching at her old school.
Her sister, Phil O’Connell-Cooper, also became a teacher and ended up as principal of the school — in 2008, Marney’s daughter Trisch Inder, who also attended St Jo’s, was appointed deputy principal to her aunt.
The following year Trisch was appointed principal, a position she stayed in till she retired in 2021.

They included Paddy Burton, "a very loved teacher" who started teaching at St Jo’s about 1990, who was killed by her son in 2001 at her Queenstown home.
Along with a memorial on the school grounds, each year the school presented the Paddy Burton Award.
"It’s for the kid who’s not necessarily [gifted] but a good, solid, beautiful kid who’s kind and does the best they can.
"That’s one way her story lives on here at the school," Trisch said.