The CS department at the German university I work for started offering their lectures in English a number of years back. While a very good command of English is

The CS department at the German university I work for started offering their lectures in English a number of years back. While a very good command of English is not uncommon in other parts of Europe, such as e.g. Scandinavia, this move is remarkable in my opinion because English is (more or less) ubiquitous only in the younger generation in Germany. A lot of middle-aged people do not speak English, or only at a very rudimentary level. Of course you won't have any problems getting around just on English in places like Berlin or Heidelberg, but this effect does not generalize across the board. So the biggest problem I see with moving to English within the German higher education system is that it creates the illusion that you don't really need to speak German to live in that country. But at the university, you live inside a bubble: some of my coworkers have come here from other countries five or more years ago, and still speak hardly any German. And that's fine because the working language in our department is de facto English. There are even German classes that the university offers and that some of my coworkers took, but since they never really needed it inside the bubble, their success at learning German has remained rather humble. Now, one of my coworker wants to move on from academia and has been looking for jobs -- IT-related, that is. He's (over?)-specialized (with his PhD almost finished) in a specific area (speech signal analysis), but basically speaks no German. He's having a really hard time getting any reactions at all to his job applications. Most of the time, the companies do not even send rejection notes. I've been helping him a little bit with this, and given his credentials, I really find it difficult to understand why he cannot even get to the interview stage -- except for his lack of German. The big problem is: if he cannot find something very soon, his visa will expire and he will be forced to leave the country. He's got a wife and two young daughters, the younger one of which was 2 years old when the family came to Germany. She's now 7 -- Germany is the country she grew up in, and she might be forced to leave it soon and move to the country of her father. Ironically, she doesn't even speak her parents' language perfectly. So, there is a caveat when studying in Germany if your goal is to start a life here afterwards. Language matters. What I cannot understand at all in this matter, though, is that by offering university courses in English and not requiring students to acquire very good German skills as well, Germany is basically investing a lot of (tax) money in the education of people who are more or less guaranteed to leave again when they're done with their studies. The return of investment is thus pretty low... you could say, almost non-existent.