Youngsters at Suffield Park Infant School, at Cromer, donned hard hats and high visibility jackets, to lead a turf-cutting ceremony marking the start of a £3 million building project.
The Norfolk County Council-funded scheme will comprise a six-classroom, stand-alone block, with alterations made to the existing buildings to create an extra reception classroom, enlarge the hall and improve the school entrance.
It will mean the Mill Road school, which also has an on-site nursery and children's centre and houses one of the county's five specialist resource bases for speech and language, can say goodbye to its mobile classrooms, two of which were installed in 2013 to increase the number of pupil places available.
It is part of the council's £144 million capital investment programme, aimed at increasing school places across the county, improving the quality of school buildings and, where possible, creating more 'all-through' schools, combining primary and secondary education on one campus.
Suffield Park Infants head teacher Jacqueline Bradford said the project, which is set to be completed by spring of next year, would 'transform' the 170-pupil school, providing modern facilities for children and a much-improved teaching environment for staff.
'The children have been very involved, looking at the plans and choosing colours for the classrooms,' she added. 'They are really excited.'
In the lead-up to Friday's turf-cutting ceremony, Matthew Hammond, of project contractors, Gill Buildings, ran a health and safety-themed assembly, with children invited to try on high visibility clothing and given a chance to take part in a poster design competition.
Guests at the event included staff, pupils, governors and town and county council representatives.
Praising the scheme, Norfolk county councillor for Cromer and former town mayor Hilary Cox said: 'This is an important step in Suffield Park Infant School's development and it is great news for the community.'
The school's chair of governors Vivienne Lennox, who has been a member of the governing body for 20 years, added: 'After waiting so long to get rid of the mobile classrooms, to have a purpose-built block is wonderful.'
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