A review of primary schools currently taking place will end soon with some closures expected to be announced.
However, details of which ones are likely to close have not been revealed by Powys County Council, councillors at its learning and skills scrutiny committee were told.
The Strategy for Transforming Education in Powys 2020-30 was approved in April 14.
Since then a “Schools Transformation Programme Board” has been set up, and the different strands of transformation have been divided up into “work streams”.
Change will be made in three stages. The first to 2022, the second to 2025 and the third to 2030.
Councillor Lucy Roberts, said: “Will you be reviewing all primary schools in wave one or is that going to be in parts of the county at a time?”
School transformation manager, Marianne Evans, told the committee: “We will be reviewing the smallest schools and we’re working through all of them below a certain number.”
But the threshold for pupils numbers which means a school is in danger of closure if it has less than the magic figure, was not revealed.
Ms Evans pointed out that there were now extra obstacles to closing schools.
She said: “In the Welsh Government school organisation code there is a section titled, “presumption against the closure of rural schools” which is a further step we are required to take when considering small and rural schools.
“We have to present a report that we have considered all options and explain why we have decided not to go with them.”
By 2030, all 11 current secondary schools should become all age schools teaching children from the age of four to 18 years.
Committee chairman, Councillor Pete Roberts said: “Do you have any idea at this point which catchment area you are looking at for three all age schools?
“Or is it still too early to say?”
Ms Evans, said: “We’re in initial discussion with a number of schools I can’t name them obviously as we have to go through the proper channels.
“It’s all very positive at this stage.”
Work on the proposals is supposed to continue through the summer before recommendations are put to the cabinet in September.
By Elgan Hearn, Local Democracy Reporting Service