Level 1-3 covers the first stage of basic education to upper secondary education (see http://www.unesco.org/education/information/nfsunesco/doc/isced_1997.htm).
de l &apos; éducation de base au deuxième cycle de l &apos; enseignement secondaire supérieur (voir http://www.unesco.org/education/information/nfsunesco/doc/isced_1997.htm).