A leaver is an individual who leaves a particular place, job or situation. It can also refer to someone who withdraws from membership in a group or organization.
While your local council may not offer a formal school leaver programme for applicants with A levels, it could offer access to training opportunities that will help you develop the career you want. (targetcareers.co.uk)
If you want to stay at, or close to, home then look at school leaver programmes in your area. (targetcareers.co.uk)
Care Leavers of Australia Network (CLAN) is a support group for people over 25 who were in orphanages, children's homes or foster care: 02 9709 4520 or 1800 008 774 (toll free) (community.nsw.gov.au)