WordNet
n. a school for teaching foreign languages
Wikipedia
A language school is a school where one studies a foreign language. Classes at a language school are usually geared towards, for example, communicative competence in a foreign language. Language learning in such schools typically supplements formal education or existing knowledge of a foreign language.
Students vary widely by age, educational background, work experience. Further, at language school students usually have the possibility of selecting a specific course according to their language proficiency. According to the CEFR. there are six languages levels that define students language proficiency base on their speaking, writing and reading skills. Students will be then assigned to the course that matches their skills.
Usage examples of "language school".
What that means, Pop, is that you and Mom can now become citizens without bothering with the language school.
I couldnt really afford to drink up there on what they paid me at the Double Fortune Language School.
There's a clothing design firm and a sporting and athletic goods distributor and a foreign language school and a modeling agency.
And as I had spent a lot of time talking to the principal of my language school, a man who was then training to become a Jungian therapist, and had become interested in what he had to say about the value of therapy, I somehow ended up going to see a lady in Bounds Green once a week.