It's a bit of a shame that the US doesn't really allow part time PhDs (at least not in any of the schools that I asked). If they did, conceivably a lot of these students could get a relatively well-paying job in engineering or a lab or something, and as such the schools could get away with paying less. Part of the reason that I didn't bother trying to pursue the CUNY PhD in mathematics was specifically because the st…
I don't really know how one does a part-time PhD. The kind of work that you produce during a PhD requires 4-6 years of full dedication. A part-time masters I could see.
Of course, even doing a part-time PhD, you end up spending a fair bit of time studying (on the order of 4-6 hours/night).