According to Format Milton director Neil Armitage, enabling development work for the school was given planning permission last week.
However, this enabling development, a housing scheme, could now be called in by the local government office.
Armitage claimed that because approval for the residential scheme was given against local planning policies, it could require further deliberation by the Government Office for the South West.
Some local residents have objected to developer Crest Nicholson's proposed 174 units, saying they impinge on their privacy.
The architect said the school is conceived as an extension of a hill top. Its grass roof follows the curvature of the site to give the impression of the landscape 'having been gently raised' to accommodate the learning facility.