According to government policy in Ireland, special needs assistants (SNAs) may be employed in post-primary schools to support students deemed to have chronic and serious care needs. There is currently no national policy regarding the continuing professional development (CPD) of SNAs, to meet the requirements of their role. This study investigated the CPD needs of SNAs, working in post-primary schools, in the Border, Midland and Western region of Ireland. Findings from a survey of SNAs and principals revealed that while the majority agreed CPD for SNAs should be compulsory, an ad hoc approach to provision of CPD prevailed, and barriers to CPD were identified. Findings also indicated that CPD in supporting students with Emotional and Behaviour Disorders was a key requirement identified by principals and SNAs. Supporting students with Autism Spectrum Disorder and promoting student independence were also identified as areas for CPD. The need for a national policy with regard to CPD for SNAs is highlighted.