'No definite data' on children attending special schools

The National Association of Special School Principals (NASSP) is looking to work with all special school principals to change the current system of special education. File Picture: Danny Lawson/PA 

A newly formed organisation for principals of special schools has said there is no data to show how many children are attending their classrooms.

The National Association of Special School Principals (NASSP) was formed on Thursday and gave details of the challenges faced by the sector.