All forms of non-vocational adult education, whether of a formal, non-formal or informal nature (for continuous vocational training see "VET").
Any adult who, having completed or being no longer involved in initial education or training, returns to some forms of non-vocational continuing learning (formal, non-formal or informal). For the purpose of the Erasmus+ projects, educational staff (teachers, trainers, educators, academic and youth staff, etc.) in any of the Erasmus+ sector cannot be considered as adult learners in Adult Education. Staff members formally linked to their working educational organization (school, vocational education and training, school education, higher education and adult education organization, etc.) may participate in activities for staff in a relevant sector of the Erasmus+ programme.