This sub-class includes: •the provision of education service at the secondary level, giving access to post-secondary (non-tertiary) or higher education. Such units provide programmes that are usually on a more subject-oriented pattern using more specialised teachers, and/or more often employ several teachers conducting classes in their field of specialisation. •education can be provided through various channels (e.g., classrooms, Internet, at home) •programmes at this level are usually designated to qualify students either for post-secondary (non-tertiary) education or higher education