Jarlath has been a teacher for over two decades. He has worked in comprehensive, independent, selective and special education, including in schools for children with social, emotional and behavioural difficulties, and severe and profound and multiple learning difficulties. Since 2011 Jarlath has been a Headteacher and Executive Headteacher.

Jarlath is a behaviour columnist for TES, has written for The Guardian and for several other education publications and trains teachers on behaviour, school leadership and special educational needs. He is also the author of Better Behaviour’s sister publication, Leading Better Behaviour: A Guide for School Leaders.