The scheme valued at around £9 million will include the rebuilding of the fire damaged part of the school, together with external and service works within the school site.
The development is being carried out by Carillion.
The building will include features such as aluminium windows glazed with laminated safety glass, and it will be protected by a sprinkler system, CCTV and intruder and fire alarms.
There will also be solar panels, rainwater harvesting, photovoltaic panels and natural ventilation.
A specialist teaching facility has been included as part of the design, but is dependent on a successful consultation.