Willmott Dixon has signed a £25.7m contract with Northamptonshire County Council to construct Kettering Science Academy.
The facility is part of the local authority's £55m academies building programme, which Willmott Dixon was appointed preferred bidder for in April.
The contractor hopes to agree contracts for Kettering Buccleuch Academy and the Malcolm Arnold Academy shortly.
Willmott Dixon will start on site later this month on Kettering Science Academy, sponsored by Brooke Weston Academy Trust, to create a new 1,100-pupil school in the Ise Lodge area of Kettering.
The new building will replace the existing secondary phase of the Kettering Science Academy, previously the ISE Community College.
The academy, which is due to open in September 2012, will be built on two levels with a 28-metre diameter central courtyard. It will also have a 450-seat theatre, a sprung timber floor sports hall, two Astroturf pitches and two 'super labs' to further support the science specialism.
The building's green credentials include a hi-tech heating system located under the lower playing field. This will regulate the temperature of the water flowing through the underground pipes so that it can be used in the academy's heating and cooling systems, helping to reduce energy bills.
Peter Owen, managing director for Willmott Dixon in the Midlands, said: "It’s great news that we have the go-ahead following the uncertainty in the summer when many of these projects were called in for review by the new coalition Government. We also hope to agree a contract for Buccleuch Academy in the near future and it is important to highlight – in addition to their educational significance - just how important these academies will be to local business.
“We are committed to investing 50% of the combined value of the academies work with local businesses within a 30-mile radius of our sites. We will use local companies for a range of services, from groundworks and roofworks to brickwork and joinery.”