<p>1) In science and engineering, it’s normal for PhD students to be “funded,” whereby their tuition is paid for and they receive a small (10-30k) stipend. Sources of funding include government fellowships, school fellowships, your research advisor’s research money, or being a TA for the department. [so if you’re planning to get a PhD, going to the 5-year BS/MS program won’t save you any money - it might actually cost money]</p>
<p>2) Some programs have a TA requirement, where you must TA a semester or two to gain teaching experience. You also may have to be a TA if you cannot secure funding from another source.</p>
<p>3) If you’re getting a PhD, usually the first 2-3 years are spent focused on coursework (where you earn your masters), and the next 2-5 years are spent focused on doing research.</p>
<p>5) It’s easier to do MS/PhD at the same time, but it’s also fine to get an MS first and then a PhD somewhere else afterward.</p>
<p>I’m a college senior about to enter an MS/PhD program in the fall, so I’m not an expert.</p>