The European Commission provides an online language test in Bulgarian, Croatian, Czech, Danish, Dutch, English, Estonian, Finnish, French, German, Greek, Hungarian, Irish Gaelic, Italian, Latvian, Lithuanian, Maltese, Polish, Portuguese, Romanian, Slovak, Slovenian, Spanish or Swedish (or additional languages once they become available in the Online Linguistic Support OLS). All Erasmus+ students are required to complete this in the working language twice- prior to the semester abroad and after its completion. The test is not a selection criterion for support in the Erasmus+ programme but is intended to assess the language competence of the students both before and after their stay abroad and document the progress they have made. The comprehensive assessment throughout Europe of the development of language competence enables the effectiveness of Erasmus+ to be evaluated.