How my admission would benefit the university? One of the main questions in an admission interview for a master’s would be 


  Why do you want to attend this university?


Reading between the lines, this means:


  What makes you and the university perfect for each other? 


The benefit of university for the student is clear.

But what benefits does the university gain from the student?
If the student actively participates in and contributes to classes and department events, the university benefits.
If the student works for the university in a lab or as a TA, and does a good job, the university benefits.
If the student publishes interesting, useful, or important work while still a student, it reflects well on the university, and the university benefits.
If the student goes on to do great things after graduating, it reflects well on the university, and the university benefits.