The official opening was held recently to celebrate the completion of a new science block and refurbishment of the existing building.
Improvements to transport and pedestrian access were also carried out with covered walkways throughout the site.
Pupils entertained the audience, dignitaries gave speeches and a plaque was unveiled by education executive board member Cllr Glynog Davies to commemorate the occasion.
The scheme was delivered through the county council’s Modernising Education Programme (MEP).
Half the funding for the scheme came from a Welsh Government grant, through its 21st Century Schools initiative, and the other half from the council’s MEP.
Cllr Davies said: “It was delightful to be part of the official opening, and thanks must go to the staff and pupils for the invitation and warm welcome.
“It was years since I had visited Coedcae and it was wonderful to see the work that has been carried out to provide the school with such excellent facilities.
“Coedcae is the most recent school to be completed through our MEP programme, it’s important that the pupils were at the official opening because it’s all about them.
“For the pupils, staff and governors at Coedcae school Christmas has come early. I encourage the pupils to maximise all the opportunities that come their way and aim to fulfil their full potential.”
Headteacher Tracy Senchal said the modernisation and development had had a significantly positive impact on pupils, staff and the whole community.
She added: “The investment has sent a very clear message that we are valued, that the educational provision and future prospects of our young people matter at the very highest level.
“A great education is certainly about more than just bricks and mortar; what is not to be underestimated, however, is the influence, whether positive or negative, that the environment can have on teaching and learning, and on pupil and staff wellbeing.
“As pupils and staff, we are all certainly capitalising on the benefits of learning and working in classrooms that are now better fit for purpose, and whose configuration and infrastructure are now better aligned with 21st century teaching and learning.
“We now have classrooms and workspaces that have greater capacity to motivate and engage learners, that provide better ICT resources to enhance learning in an increasingly digitalised world, and which scream, ‘learning matters’.”