This answer says most PhD students in US universities are funded through research or teaching assistantships.
So research or teaching assistantships count toward any financial requirements in terms of applying for a visa to study in the US? What about other countries? If a certain country does not count research or teaching assistantships toward financial requirements, how are students in those countries funded?
I heard that in the UK or for some places in Europe, research or teaching assistantships do not count toward financial requirements. Is this true?
People in the UK who are non-EEA either self-fund, or they get one of the very few and very competitive scholarships. See an answer of mine for a comprehensive reply about the UK PhD funding situation.
I don't know anything about the US at all, so I'm putting as comment and not an answer.
– la femme cosmique Aug 17 '16 at 12:02