A Stafford school closed after formaldehyde was discovered will remain shut until Easter.
Flash Ley Primary closed its doors in October because of a strong odour, and some children complained of feeling unwell.
County Councillor Ben Adams, Cabinet Member for Learning and Skills, has written to parents updating them on the situation.
He said: “We are doing everything we can to bring Flash Ley children and staff back together in their community, under one roof, as soon as possible. However, the investigations into formaldehyde at the school –and how we rectify this—are still ongoing, and we have been holding regular meetings with the headteacher, governors, contractors and the Health and Safety Executive to find the right solution.
“The last two months have been challenging for staff, parents and pupils, but we need to make sure all the issues have been addressed effectively before we can put a long-term plan in place. We will continue to review the current alternative arrangements and look at all of the options for educating the children in the local community.
“The parents and staff at the school have been incredibly supported, and I want to thank them for their understanding while the investigation continues. I also want to thank schools which are helping and the wider education community, which have pulled together to support Flash Ley in these unprecedented circumstances.”
Children will continue to be educated at the nearby Chetwynd Centre, Tillington Manor Primary and Stafford Manor High when the new school term starts in January.