The tripartite system of grammar schools, secondary moderns and technical schools - along with the controversial 11 Plus - was the brainchild of RA Butler, Conservative President of the Board of Education in Churchill's wartime coalition.

BBC: Tory MP: More grammar schools please

That is true of a third of secondary schools and of the technical and vocational colleges attended by two-thirds of students in higher education.

ECONOMIST: Education in Chile

While ensuring quality education, Director-General Bokova stressed that efforts should be made to keep girls in schools, especially in secondary schools, and to eliminate prejudices towards Technical and Vocational Education and Training (TVET), particularly for girls.

UNESCO: Social and Human Sciences

There will also be greater provision for vocational training in secondary schools, which she said would enable 200, 000 young people to acquire technical and craft skills.

BBC: Secondary schools Morris's priority