There are numerous accreditations for language schools worldwide and they vary by country and languages taught. It's truly beyond the scope of this report to cover all of them, but accreditations by government associated institutions are usually a fantastic sign.
Other than that, language colleges can be accredited by the Ministry of Education of the nation in which they're based. language schools
Accreditations by associations of language colleges are also a fantastic indication, but do figure out who's behind the institution, because some institutions are more recognized than others.
An accreditation is not a 100% assurance that nothing can fail at your selected language college. But should anything go wrong, it gives you the option to raise the matter to the accrediting organization, which gives you a way to pressure the faculty to resolve your issue or refund your charges. If the college is not accredited, you have nowhere to escalate your concerns . språkskolor