If you want to sign up for a quality language class, you face a chicken-and-egg problem. Schools often require you to pay in full before joining the class, while you can only find out the quality after you have joined. Best 美国商学院排名
In this article I offer 4 methods to help assuring you are signing up with a good school.
Method 1: Check if the language school is accredited
There are numerous accreditations for language schools worldwide and they vary by country and by languages taught. It is really beyond the scope of this article to cover all of them, but accreditations by government associated institutions are generally a good sign.
Most major countries have a cultural institute to stimulate the learning of their language abroad, for example: the British Council for English, the Goethe institute for German, Instituto Cervantes for Spanish, Alliance Francaise for French and Confucius institute for Mandarin Chinese. Besides that, language schools can be accredited by the Ministry of Education of the country in which they are based.
Accreditations by associations of language schools are also a good sign, but do find out who is behind the association, because some associations are more established than others.
An accreditation is not a 100% guarantee that nothing can go wrong at your selected language school. But should anything go wrong, it at least gives you the option to raise the matter to the accrediting organization, which gives you a way to pressure the school to resolve your problem or refund your fees. If the school is not accredited, you have nowhere to escalate your concerns to.