In 2023, Cambridgeshire County Council entered into an agreement with the government to build Greensands Academy in Gamlingay and Lime Academy March.
Between them, they would have space for up to 270 pupils with special educational needs and disabilities (Send), the Local Democracy Reporting Service said.
A spreadsheet shared by the DfE showed the schools listed as being “under consideration for alternative funding”.
South Cambridgeshire District Council leader Bridget Smith said “the continued doubt” had left parents frustrated.
“We know there is already a severe shortage of special school places in Cambridgeshire and further delay is profoundly disappointing,” she said.
The DfE highlighted comments made by Education Secretary Bridget Phillipson that, since 2010, more than £325m had been spent on free schools that had “subsequently closed, some after opening with only a handful of pupils”.
Phillipson added: “That money could and should have been better invested in schools that were crumbling or more mainstream specialist Send places.
“So instead of adding free schools where places already exist, we are delivering tens-of-thousands of new places to better support pupils with Send in a school that is close to home.”