The Special Needs Parents Association is critical of the timing of the announcement of 260 extra SNA posts for the upcoming school year.
The association said the announcement has come at a time when many schools have already finished up for the summer making it a "logistical nightmare" for both teachers and parents alike.
29% of primary and secondary schools will see an increase in the number of SNA's from September.
"I understand there might have been operational difficulties getting the numbers out," said Lorraine Dempsey from the association.
"[They've] tried to issue the numbers a bit earlier on … to facilitate everybody.
"Looking at the numbers on the face of it, it seems positive, but on closer examination, a lot of those increases are very, very, marginal."