An additional support need comes from anything which is a barrier to learning.
Most or all schools will have some children with additional support needs of some kind. The education authority has many legal duties towards pupils with additional support needs. Information about this is contained in a booklet called In On The Act : Information For The General Public which is published on the education authority website at www.edinburgh.gov.uk/inontheact.
Or contact the additional support for learning team (Mrs Henry or Mrs Leach) on telephone number 0131 445 4545.