This report focuses on the structure of mainstream education in European countries from preprimary to tertiary level for the 2017/18 school and academic year. Forty-three education systems are included covering 38 countries participating in the EU's Erasmus+ programme (28 Member States, Albania, Bosnia and Herzegovina, Switzerland, the former Yugoslav Republic of Macedonia, Iceland, Liechtenstein, Montenegro, Norway, Serbia and Turkey). The first section of the report sets out the main organisational models of primary and lower secondary education (ISCED 1-2). The second one provides a guide on how to read the diagrams. The national schematic diagrams are shown in the third section.