Secondary school places have not been found for more than 100 pupils due to unprecedented demand in Middlesbrough.
Parents are being informed this week, and education chiefs have pledged to ensure all those currently without a place will be accommodated.
While those who have been offered places will be informed on Friday, 87 applications have not been allocated a place, with no application submitted in a further 20 cases.
In comparison with 2018, fewer pupils who live in Middlesbrough are being offered places elsewhere, while the borough has seen a rise in the number of pupils from outside being offered places in its schools.
The number of Year 6 pupils living in Middlesbrough has also increased by more than 60 compared with last year, while the number of places available in Middlesbrough schools has also reduced slightly.
Those affected are being advised to seek places at schools in neighbouring boroughs, with many places currently available in Stockton and Redcar & Cleveland.
Work is also being undertaken to increase capacity in Middlesbrough.
Andrea Williams, Middlesbrough Council’s Director of Education, said: “We have unprecedented numbers of children requiring places in Middlesbrough schools which could not have been foreseen, and clearly this is a matter of considerable concern.
“We are working hard to resolve the situation, and I’m grateful to parents for their patience and understanding.”