Is it safe for a female to travel alone to Namibia?

I want to study abroad in Windhoek, Namibia in Africa over the summer. I am a single female and would be going alone. Is this safe? I understand that there are some common sense things to increase safety, like not traveling alone at night. Overall though, is it fairly safe? Or should I look for another place to study?
Update: I would be going to Windhoek and just for fun and the experience, not necessarily the credits. The do transfer over to my university, however.
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