Pupils were joined by the Mayor of Kirklees to celebrate the official opening of their new school.
Coun Martyn Bolt unveiled a plaque marking the formation of Westmoor Primary School during a ceremony at its infant and nursery site.
He was also treated to performances by pupils and a guided tour of the recently refurbished facilities in Knowles Hill Road last Friday.
The school in Dewsbury Moor was created in April by the merger of Westmoor Junior School with Knowles Hill Infant and Nursery School.
But staff decided to wait until pupils had their new uniforms and new signage was in place before holding the official opening.
Headteacher Kim Lonergan said: “This is just a little bit of a celebration of all the hard work we’ve done to get to this stage.
“We started off two separate schools and have come together over the past three or four months.”
She said she was proud of the school and proud to introduce some of the 485 children to the mayor and guests.
The key stage one and two choirs both performed songs, while pupils from the junior site in Church Lane showed off their street dance skills.
Former pupil Jacob Moss, who was school council leader last year, said: “Our main project was to convince both the public and Kirklees Council that the merger was a good idea.
“We had to produce a consultation document of evidence and benefits of combining the schools into one. I believe it will bring the community closer together and the children of Westmoor Primary a better education.”
Mrs Lonergan thanked staff, governors and parents for their support as the two schools merged.
Speaking to the Reporter, she said: “It’s coming together really well. “We’ve tried to do the whole school in the same colours and we bought all the pupils new uniforms. We’ve also mixed the staff so some who were in juniors have come to infants and vice versa.
“It’s good to have opportunities like today to bring the children together. When we do, we really see how it’s going to work as a whole school.”