Basic education is comprised of pre-school (3-5 years old), primary school (6-11 years old), and secondary school (12-17 years old.)

基础教育是由学前教育(3—5岁)、小学(6—11岁)和初中(12—17岁)组成的。

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Primary education lasts for four years preceded by one year of pre-school education.

初等教育为四年，之前有一年的学前教育。

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He says over the next six months, UNICEF plans to support the repair and renovation of around 1, 000 primary schools and 400 pre-school facilities.

他表示，在接下来的6个月里，联合国儿童基金会计划为大约1千所小学和400所学前设施提供修复帮助。

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Mexico has one of the highest rates of pre-primary school enrolment among OECD countries, but only under half of students complete secondary education, according to an OECD report in 2012.

BBC: Mexico's Pena Nieto enacts major education reform

Instead the authors recommend that "policymakers should concentrate on educational reforms in primary and pre-school" and want more effort made to raise the basic skills of disadvantaged groups.

BBC: Top maths pupils 'fail to keep up with world's best'

Unison said it would ballot its members in the pre-school, nursery, primary and secondary education sectors on industrial action in response to the cuts.

BBC: NEWS | UK | Northern Ireland | Board cuts lead to resignations