Why is English proficiency certificate a prerequisite?

This is in reference to the story University of Rwanda opens for admission published March 6. Why do they need a Certificate in English proficiency?

Friday, March 06, 2015

Editor,

This is in reference to the story University of Rwanda opens for admission published March 6. Why do they need a Certificate in English proficiency? Is it necessary for students who completed their studies with English as a medium of instruction? I don’t really understand the relevance of this certificate and the short notice given to have it as a prerequisite to be admitted to the University of Rwanda.

Schadrack

Reaction to the story, "University of Rwanda opens for admission" (The New Times, March 6)