It had previously been hoped Tynwald would consider the plans in June
Treasury says it's 'very unlikely' a Tynwald vote on funding for the replacement for Castle Rushen High School will take place during this administration.
Senior figures from the department were asked about progress on the project during an appearance before the Public Accounts Committee.
It had previously been hoped the vote would take place at June's sitting, but Treasury Minister Chris Thomas confirmed it's now likely to be a decision for after the election.
He told the committee work on the cost is ongoing:
500% increase in immigration arrests on the Isle of Man
More taxpayers' cash could be spent on 'cleaner heating'
RAF veteran says assisting blind climber will be 'massive honour'
Financial leaders from small countries visiting Island
New liquor licence proposed to support private events sector