Some 24, 600 primary and secondary school students were told to stop wearing uniforms made by the company.

BBC: Shanghai police probe 'toxic' school uniforms

It aims to raise the awareness of primary and secondary school students of the importance of water as a vital resource.

UNESCO: World Water Assessment Programme (WWAP)

The Global Microscience Experiments Project is a hands-on science education project that gives primary and secondary school students as well as university students the opportunity to conduct practical work in physics, chemistry and biology, using kits that are veritable mini-laboratories.

UNESCO: Celebrating World Science Day for Peace and Development

The Global Microscience Experiment Project is a hands-on science education project that gives primary and secondary school students ( in some countries university students as well) the opportunity to conduct practical work in physics, chemistry and biology, using kits that come with booklets describing possible scientific experiments.

UNESCO: SERVICE DE PRESSE

The reforms started in September 2001 with about 420, 000 primary- and junior secondary-school students (out of a national total of more than 215m) taking part in 38 experimental zones around the country.

ECONOMIST: China

At mid-day it was high school students, primary and secondary teachers.

BBC: Eurozone crisis: Democracy in the balance

In the second phase, UNESCO reviewed and printed 9 million copies of primary and secondary school textbooks, which benefited 6 million students throughout Iraq for the academic year 2005-2006.

UNESCO: Textbooks Quality Improvement Programme in Iraq | United Nations Educational, Scientific and Cultural Organization

In Brazil, for example, 24 percent of primary-school pupils and 18 percent of secondary students are repeaters.

UNESCO: HIGH DROP OUT AND REPETITION RATES SHOW QUALITY TO BE A CONCERN IN LATIN AMERICAN EDUCATION SYSTEMS

As they work their way through primary education and on into basic secondary, education delay increases the probability of students dropping out of school.

UNESCO: MEDIA SERVICES