I have a friend from Rwanda who is learning to speak English. She's really intelligent but the learning process is slowed by her busy schedule. Any chance of seeing a Duolingo course for Kinyarwanda to English?
Have a look at this post about how to suggest a language course: https://www.duolingo.com/comment/15014194. The moderators keep a list on that page of courses that have been suggested. English for Kinyarwanda speakers hasn't been suggested yet. I'll leave a message on jrikhal's stream and ask him to add this to the list.
You might want to read [GUIDE] I would like a new course: What should I do?
And Swahili is an African language course that is available.