| Deutsch | deu-000 |
| Mittelstufe | |
| Afrikaans | afr-000 | hoërskool |
| asturianu | ast-000 | licéu |
| asturianu | ast-000 | llicéu |
| asturianu | ast-000 | secundaria |
| brezhoneg | bre-000 | lise |
| български | bul-000 | гимназия |
| català | cat-000 | institut |
| català | cat-000 | liceu |
| català | cat-000 | primer cicle de secundària |
| čeština | ces-000 | 7. a 8. stupeň střední školy v USA |
| čeština | ces-000 | ISCED 2 |
| čeština | ces-000 | druhý stupeň základní školy |
| čeština | ces-000 | gymnázium |
| čeština | ces-000 | lyceum |
| čeština | ces-000 | nižší sekundární úroveň |
| čeština | ces-000 | první stupeň základní školy |
| čeština | ces-000 | střední škola |
| čeština | ces-000 | učitel druhého stupně základní školy |
| čeština | ces-000 | učitel nižší sekundární úrovně |
| čeština | ces-000 | vzdělávání středoškolské |
| 普通话 | cmn-000 | 中学 |
| 普通话 | cmn-000 | 中学校 |
| 普通话 | cmn-000 | 初中 |
| 普通话 | cmn-000 | 初级中学 |
| 普通话 | cmn-000 | 国中 |
| 普通话 | cmn-000 | 国民中学 |
| 國語 | cmn-001 | 中學 |
| 國語 | cmn-001 | 中學校 |
| 國語 | cmn-001 | 初中 |
| 國語 | cmn-001 | 初級中學 |
| 國語 | cmn-001 | 國中 |
| 國語 | cmn-001 | 國民中學 |
| Hànyǔ | cmn-003 | chū jí zhōng xue |
| Hànyǔ | cmn-003 | chū zhong |
| Hànyǔ | cmn-003 | guó mín zhōng xue |
| Hànyǔ | cmn-003 | guó zhong |
| Hànyǔ | cmn-003 | zhongxue |
| Hànyǔ | cmn-003 | zhōng xue |
| dansk | dan-000 | højere uddannelse |
| Deutsch | deu-000 | Fortgeschrittenenklasse |
| Deutsch | deu-000 | Gymnasium |
| Deutsch | deu-000 | Hauptschule |
| Deutsch | deu-000 | ISCED 2 |
| Deutsch | deu-000 | Mittelmaß |
| Deutsch | deu-000 | Mittelmäßigkeit |
| Deutsch | deu-000 | Mittelschule |
| Deutsch | deu-000 | Sekundarstufe 1 |
| Deutsch | deu-000 | Unterstufe |
| Deutsch | deu-000 | fortgeschrittener Anfänger |
| Deutsch | deu-000 | mittlere Qualität |
| Deutsch | deu-000 | weiterführende Schule |
| eesti | ekk-000 | ISCED 2 |
| eesti | ekk-000 | keskkooli 1 aste |
| ελληνικά | ell-000 | γυμνάσιο |
| ελληνικά | ell-000 | δευτεροβάθμια εκπαίδευση |
| ελληνικά | ell-000 | λύκειο |
| English | eng-000 | ISCED 2 |
| English | eng-000 | average |
| English | eng-000 | big school |
| English | eng-000 | defensive backs |
| English | eng-000 | high school |
| English | eng-000 | intermediate level |
| English | eng-000 | junior high |
| English | eng-000 | junior high school |
| English | eng-000 | lower secondary |
| English | eng-000 | medium quality |
| English | eng-000 | middle class |
| English | eng-000 | middle school |
| English | eng-000 | second grade |
| English | eng-000 | secondary grade |
| English | eng-000 | secondary line |
| English | eng-000 | secondary school |
| Esperanto | epo-000 | gimnazio |
| Esperanto | epo-000 | liceo |
| Esperanto | epo-000 | mezlernejo |
| euskara | eus-000 | bigarren hezkuntzako lehen zikloa |
| euskara | eus-000 | irakaskuntza ertain |
| euskara | eus-000 | lizeo |
| suomi | fin-000 | keskiasteen koulutus |
| suomi | fin-000 | keskikoulu |
| suomi | fin-000 | yläaste |
| suomi | fin-000 | yläkoulu |
| français | fra-000 | CITE 2 |
| français | fra-000 | collège |
| français | fra-000 | cycle |
| français | fra-000 | deuxième ligne défensive |
| français | fra-000 | enseignement secondaire |
| français | fra-000 | habilité moyenne |
| français | fra-000 | institut |
| français | fra-000 | lycée |
| français | fra-000 | marche |
| français | fra-000 | niveau moyen |
| français | fra-000 | secondaire inférieur |
| français | fra-000 | secondaire premier cycle |
| Gàidhlig | gla-000 | àrd-sgoil |
| galego | glg-000 | ensino secundario (primeiro ciclo) |
| yn Ghaelg | glv-000 | ard-schoill |
| yn Ghaelg | glv-000 | mean scoill |
| Hausa | hau-000 | midil |
| עברית | heb-000 | חטיבת ביניים |
| hrvatski | hrv-000 | srednja škola |
| magyar | hun-000 | középfokú oktatás |
| magyar | hun-000 | középiskola |
| արևելահայերեն | hye-000 | միջնակարգ դպրոց |
| Ido | ido-000 | gimnazio |
| bahasa Indonesia | ind-000 | sekolah menengah |
| bahasa Indonesia | ind-000 | sekolah menengah pertama |
| íslenska | isl-000 | framhaldsskóli |
| íslenska | isl-000 | gagnfræðaskóli |
| íslenska | isl-000 | menntaskóli |
| italiano | ita-000 | CITE 2 |
| italiano | ita-000 | istruzione secondaria |
| italiano | ita-000 | liceo |
| italiano | ita-000 | livello secondario inferiore |
| italiano | ita-000 | scuola media |
| italiano | ita-000 | scuola secondaria inferiore |
| italiano | ita-000 | secondario di primo grado |
| italiano | ita-000 | secondario inferiore |
| 日本語 | jpn-000 | 中学校 |
| 日本語 | jpn-000 | 中段 |
| 日本語 | jpn-000 | 中等 |
| 日本語 | jpn-000 | 中級 |
| ქართული | kat-000 | საშუალო განათლება |
| ភាសាខ្មែរ | khm-000 | សាលាមជ្ឈិម |
| ភាសាខ្មែរ | khm-000 | អនុវិទ្យាល័យ |
| 한국어 | kor-000 | 국립 고등 학교 |
| 한국어 | kor-000 | 중등 학교 |
| 한국어 | kor-000 | 중학교 |
| Lëtzebuergesch | ltz-000 | Mëttelschoul |
| македонски | mkd-000 | средно училиште |
| reo Māori | mri-000 | kura tuarua |
| Nederlands | nld-000 | ISCED 2 |
| Nederlands | nld-000 | lager secundair onderwijs |
| Nederlands | nld-000 | middelbare school |
| Nederlands | nld-000 | middenschool |
| Nederlands | nld-000 | midelbaar onderwijs |
| Nederlands | nld-000 | onderbouw |
| Nederlands | nld-000 | school |
| Nederlands | nld-000 | secundaire school |
| bokmål | nob-000 | videregående utdanning |
| occitan | oci-000 | licèu |
| فارسی | pes-000 | دبیرستان |
| polski | pol-000 | ISCED 2 |
| polski | pol-000 | edukacja na poziomie średnim |
| polski | pol-000 | szkolnictwo gimnazjalne |
| polski | pol-000 | szkolnictwo średnie pierwszego stopnia |
| português | por-000 | CITE 2 |
| português | por-000 | Secundário inferior geral |
| português | por-000 | Secundário inferior profissional |
| português | por-000 | Secundário primeiro ciclo |
| português | por-000 | ensino médio |
| português | por-000 | ensino secundário |
| português | por-000 | instituto |
| português | por-000 | secundário inferior |
| português | por-000 | secundário primeiro ciclo |
| română | ron-000 | liceu |
| română | ron-000 | școală medie |
| русский | rus-000 | лицей |
| русский | rus-000 | сре́дняя шко́ла |
| русский | rus-000 | среднее образование |
| русский | rus-000 | средняя школа |
| slovenčina | slk-000 | stredoškolské vzdelávanie |
| slovenščina | slv-000 | gimnazija |
| slovenščina | slv-000 | srednješolsko izobraževanje |
| español | spa-000 | CINE 2 |
| español | spa-000 | escuela |
| español | spa-000 | escuela media |
| español | spa-000 | liceo |
| español | spa-000 | línea secundaria |
| español | spa-000 | secundaria |
| español | spa-000 | secundaria inferior |
| español | spa-000 | secundaria primer ciclo |
| svenska | swe-000 | högstadieskola |
| svenska | swe-000 | läroverk |
| svenska | swe-000 | mellanstadie |
| svenska | swe-000 | realskola |
| Kiswahili | swh-000 | sekondari |
| ภาษาไทย | tha-000 | มัธยมต้น |
| ภาษาไทย | tha-000 | โรงเรียนมัธยม |
| Türkçe | tur-000 | lise |
| українська | ukr-000 | ліцей |