Discerning dubious from legit foreign schools

[Maniac Craniac]

As someone from North America, the best way to tell is really to check if the major foreign credential evaluators (e.g. WES) recognize the institution / degree.  It does not matter if the degree is prestigious or not in the local country - if the evaluators think it's not equivalent, then the qualification has limited to no value where I live.  Obviously if you live in Europe or Asia, this does not apply.

I'm going to disagree with this, a bit. The most common method I expect employers to use to "evaluate" a degree would be a Google search. If a quick search turns up that the school is prestigious locally, that would be a boon. 

Of course, that's assuming that they even go that far. If employers put that much effort into determining the legitimacy of a degree, there wouldn't be diploma mills.