I am applying for Math Ph.D programs, some of the schools say in their websites that they'll consider one for their MS program if one is not accepted to their PhD program.
I was wondering if all schools are like that, or it depends?
Some do, others don't. I have heard the term 'cash cows' many times when it comes master's student in graduate schools (Because PhD is almost always full funded in a way or another). Some schools might offer you an unfunded master's admission if you don't get into their PhD program, and many applicants think of this as a polite rejection.