Level of the best-known foreign language (self-reported) by educational attainment level
                methods, notes and classification
            
         
     
 
    
        
            
                                    
                
                
                
                
                    
                    
                        
                            -  International Standard Classification of Education (ISCED 2011)
- 00 All ISCED 2011 levels
 - 01 Less than primary, primary and lower secondary education (levels 0-2)
 - 02 Upper secondary and post-secondary non-tertiary education (levels 3 and 4)
 - 03 Upper secondary and post-secondary non-tertiary education (levels 3 and 4) - general
 - 04 Upper secondary and post-secondary non-tertiary education (levels 3 and 4) - vocational
 - 05 Tertiary education (levels 5-8)
 
 -  Level of knowledge
- 0 Proficient
 - 1 Good
 - 2 Basic
 - 3 No response
 
 -  Age class
- 00 From 18 to 24 years
 - 01 From 18 to 64 years
 - 02 From 18 to 69 years
 - 03 From 25 to 64 years
 - 04 From 25 to 69 years
 
 -  Unit of measure
 -  Geopolitical entity (reporting)
- 000 European Union - 27 countries (from 2020)
 - 001 Euro area – 20 countries (from 2023)
 - 002 Belgium
 - 003 Bulgaria
 - 004 Czechia
 - 005 Denmark
 - 006 Germany
 - 007 Estonia
 - 008 Ireland
 - 009 Greece
 - 00a Spain
 - 00b France
 - 00c Croatia
 - 00d Italy
 - 00e Cyprus
 - 00f Latvia
 - 00g Lithuania
 - 00h Luxembourg
 - 00i Hungary
 - 00j Malta
 - 00k Netherlands
 - 00l Austria
 - 00m Poland
 - 00n Portugal
 - 00o Romania
 - 00p Slovenia
 - 00q Slovakia
 - 00r Finland
 - 00s Sweden
 - 00t Iceland
 - 00u Norway
 - 00v Switzerland
 - 00w United Kingdom
 - 00x Bosnia and Herzegovina
 - 00y North Macedonia
 - 00z Albania
 - 010 Serbia
 - 011 Türkiye