It means finding a university where the culture and academics will bring out the best in the student, socially and academically. The style of teaching should match the student’s learning style, and the student culture should be supportive but challenging.
People should be able to write in a variety of styles. For many circumstances, conversational/colloquial writing is fine. If you only know how to write conversationally, problems begin to arise if you need to express something that is more formal and you have to use language that doesn’t dissolve under scrutiny. You have to say exactly what you mean and not allow the style and context to carry the meaning. Academic prose is meant to be that, as such it is dry and boring, but when you’re communicating across geographic, cultural, generational boundaries, you need to be able to construct sentences that can’t be accidentally misinterpreted. As such, most writers (which is now a requisite for every job) must be able to write both ways (and I’m sure there are many other necessary styles that you can create important use cases for).