Educational institution group

In the Standard Industrial Classification (TOL 2002) polytechnics are placed in the group of higher education. In the statistics on teachers groups of educational institutions have been formed where polytechnics are in a separate group. In the deduction different auxiliary variables had to be used for those polytechnics where by the education organiser's code both vocational and polytechnic education is arranged. For these deduction needs to be made only in cases where the data are in the same register.