Percent of persons in upper secondary education with apprenticeship in a business, as apprentices or trainees, as well as pupils in alternative vg3 in school. Percent of persons in vocational education in a business = (Apprentices)+(Trainees)+(Pupils in alternative vg3 in school)/(Pupils and apprentices total)*100 Numerator: Apprentices, trainees and pupils in alternative vg3 in upper secondary education per 01.10. Source: VIGO. Denominator: Pupils, included all pupils in alternative eduvation + apprentices and trainees in upper secondary education + pupils in vocational training in school. Source: VIGO.