highest completed level of education according to the International Standard Classification of Educational Levels (ISCED 97): low (ISCED 0, 1 or 2); middle (ISCED 3 or 4); high (ISCED 5 or 6),
Korkein suoritettu koulutustaso kansainvälisen koulutusluokituksen (ISCED 97) mukaan: alhainen (ISCED 0, 1 tai 2); keskitaso (ISCED 3 tai 4); korkea (ISCED 5 tai 6)