From the end of WW II until the school year 1981/82 when the vocational secondary school was introduced, on average every other pupil attended a vocational (in the first post-war years also apprenticeship) school, every fifth a gymnasium and every fourth a professional technical school.
Od konca vojne pa do tedaj, ko je bilo uvedeno srednje usmerjeno izobraževanje (1981/82), je v povprečju vsak drugi šolar obiskoval poklicno srednjo šolo (v prvih povojnih letih tudi vajensko), vsak četrti strokovno tehniško šolo, vsak peti gimnazijo.