Discerning dubious from legit foreign schools

[siersema]

The discussion of foreign schools comes up often here, especially in regards to graduate degrees. But because most of the students that visit are from the US, we don't always know how to tell when a school is legit or not. If you have information about specific countries, please share here.

South Africa:

List of Universities and Private Higher Education. 
https://www.dhet.gov.za/

I am not from the country. I did some research as they can be an economical option.