Parents, carers, staff and local people will be polled on plans to merge two Crowborough schools and create an all-through primary school.
At a meeting on December 8 Cllr Nick Bennett gave the go-ahead for the consultation to bring together Whitehill Infant School and Herne Junior School from September 1.
The two schools are already federated and share the same governing body, but under the proposals Herne Junior School would close and the age range for Whitehill be increased from four to seven years to four to 11 years.
The primary school would use both sites, have a single governing body and a single headteacher. All pupils attending Whitehill Infant School or Herne Junior School at the time of change would automatically become part of the primary school.
The consultation runs from now until Wednesday, February 11. An online questionnaire can be completed at www.eastsussex.gov.uk/yourcouncil/consutlation