More than 300 children with a statement of Special Educational Needs (SEN) are without a school place for September.
That includes 91 children waiting for a place in a special school and 202 seeking a place in a mainstream school.
The Education Authority (EA) said there had been a "significant rise" in demand for special school places.
It said it was "working hard" to ensure children with SEN had "an appropriate place" for 2022/23.
