Programmes at ISCED level 1, or primary education, are typically designed to provide students with fundamental skills in reading, writing and mathematics (i.e. literacy and numeracy) and establish a solid foundation for learning and understanding core areas of knowledge, personal and social development, in preparation for lower secondary education. It focuses on learning at a basic level of complexity with little, if any, specialisation. (see ISCED 2011 Manual paragraph 120)
ISCED 2011
http://uis.unesco.org/sites/default/files/documents/international-standa...