A £3.2m extension at Victoria Road School, in Castletown, will be formally opened next month.
Former Castletown MHK and school governor Tony Brown will unveil a plaque at 3.30pm on Wednesday, February 5.
An open afternoon will precede the ceremony and the public is invited into school from 3pm to see the new facilities.
It includes new classrooms, a multi-purpose hall and improvements throughout the school. The project was carried out by Auldyn Construction. The hall came into use in March 2013, with the works being completed in September.
Acting head teacher Ian Postlethwaite said: ‘The additional classrooms have provided spacious learning environments for our rising pupil numbers and the new reception classroom and outdoor area development has made a huge difference to what we offer in the foundation stage.
‘We are delighted with our fabulous new hall. It has provided the children and staff with many more opportunities in terms of physical, creative and personal development.’ (MW140110-19)