[sidww2]

In the sciences, almost everyone - domestic or international is paid a stipend. It's more accurate to think of PhDs are paid researchers rather than students. Taking classes is not the point of doing a PhD so it's not education in the sense that doing a Bachelors or Masters is education

For Masters, everyone pays tuition - unless one can find a research assistanship where the professor is willing to fund part or all of the cost, scholarship, etc.