Some parents have said they face a "fight from day one" to get Education Authority (EA) support for children with special educational needs (SEN).
BBC News NI has learned the EA has conceded about two-thirds of cases brought to an independent tribunal by parents of children with SEN.
The information came in a response to a freedom of information request.
The EA said it knew it must do better to improve children's outcomes.
Parents and schools can appeal to a tribunal if the EA refuses to assess or statement a child.
