Around 20 schools in the north-east could be over capacity in the next five years according to a local authority.
School roll forecasts for Aberdeenshire show there will be an increase in the number of primary and secondary schools exceeding maximum figures.
A report from Aberdeenshire Council shows 20 schools out of 169 could be over-subscribed by 2023.
However the forecast has reduced the number of schools expected to go over capacity from last year’s report.
In 2017, the council said 43 schools could be full by 2022.
The authority said it monitors school numbers on a monthly basis and work has gone into reducing capacity issues.
Included in the council’s forecast is Mearns Academy, Laurencekirk, which opened in 2014 and is expected to have 737 pupils in 2023 when its capacity is 700. This year 685 pupils are on the roll.
However requests for out-of-zone placing are set to be reviewed to combat the issue.
Hillside Primary School in Portlethen is predicted to be at 153% capacity by 2023.
Currently 366 pupils attend with 569 expected in 2023 with a 372-pupil capacity.
Inverurie Academy, which could have 1,194 pupils in 2023, is due to be replaced by a new community campus and is expected to be open in 2020 with a school capacity of 1,600. The school has 884 pupils at its current campus which holds 1,100.
Meldrum Academy is expected to have 1,105 attending and be at 113% of its capacity by 2023.
School rolls for 2018 have shown that 990 pupils go to the Oldmeldrum Academy which is supposed to hold 980.
Also included in the report is Dales Park School in Peterhead which has 205 pupils at the 317-capacity school.
Council officers will monitor the situation as the roll is expected to rise to 379 students by 2023.
Maxine Booth, quality improvement manager in the learning estates team at Aberdeenshire Council said: “With Hillside we do have planning permission for an extension to be built at the school.
“It is hoped it would be completed by 2020 which would help increase the capacity.
“We wouldn’t, however, account for this in the capacity until it is actually used and being used by the children and teachers.”
Maxine is part of a dedicated team of six at Aberdeenshire Council which looks after the learning estates service including school roll forecasts.
She said: “We monitor the school roll forecasts on a monthly basis so we know when families both arrive and leave certain schools.
“It allows to us plan accordingly. Each school is looked at and allows us to take a strategic approach to education in Aberdeenshire.
“We have also done rezoning exercises in places like Peterhead and Westhill which have been welcomed.”
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The Education and Children’s Service Committee is set to discuss the school roll forecast in February. Chairwoman for the committee Gillian Owen said: “Our school estates team is constantly monitoring projected school rolls.
“A number of schools have an additional working capacity, making space for pupils in temporary accommodation on site.
“We are also preparing to support schools which may or may not reach capacity through a range of other measures.”
Elected members of area committees will discuss school rolls at the education and children’s services committee in February.
This meeting gives councillors the chance to air any concerns in their constituencies.
Education bosses also said work has taken place to maximise space in schools where there is a low number of students.
Udny Green, which has only 47 pupils in the 75-capacity school, is used as the base for the Aberdeenshire Specialist Technology Service (ASPECT) service. It helps develop technology to support children with additional support needs.