Eurostat, Luxembourg. Employees by educational attainment level, sex, age and NACE Rev. 1.1 activity (%): Sex: Total / Statistical classification of economic activities in the European Community (NACE Rev. 1.1): Total - all NACE activities / International Standard Classification of Education (ISCED 2011): Less than primary, primary and lower secondary education (levels 0-2) / Unit of measure: Percentage / Age class: From 15 to 64 years / Geopolitical entity (reporting): Slovakia.