Parents and residents have been given their first glimpse of plans to transform Thomas Gainsborough School in Great Cornard.
During a public exhibition on Tuesday, visitors to the school in Head Lane were invited to examine images of the proposals which will see a four-storey building created.
Once completed, the existing school buildings, except the sports centre and library, would be demolished.
Headteacher Wayne Lloyd said the project would help “enhance and develop” learning.
“We are very excited by the design and believe that the parents and families of our current and future students can look forward to an outstanding school far into the future,” said Mr Lloyd.
As well as a new 9,124 square metre teaching block, it is hoped the removal of the old buildings will free up more land for playing fields.
The Education Funding Agency is behind the multi-million pound scheme, which is part of the Priority Schools Building Programme.
It will allow Thomas Gainsborough to accommodate 1,400 pupils – at present it has 1,250 students.
Subject to planning permission being secured, Mr Lloyd said construction could start in May, with the work being finished by September 2015.
Gordon Jones, chairman of the school’s board of governors, said the scheme was the start of an exciting new chapter for the school.
“It shows the determination of all concerned in raising the aspirations and outcomes of students here,” he said.
Mick Cornish, chairman of the parish council, and his wife Barbara, said they were impressed by the designs.
“It looks like there will be a lot of natural light and I wish I had gone to a school in a building like this,” said Mrs Cornish.