Hello PF. I recently was accepted to a PhD program in nuclear engineering. I am planning on attending for the duration of my phd. I just wanted to ask from those of you who have successfully completed graduate school...how much time does it take? I did a research program last summer so I know that they expect at least 40 hrs a week during the summer of research since you aren't taking courses...but during the full semesters when you have a full course load and your own research, and possibly a RA or TAship to boot, how much free time can I expect to have? A few months ago I visited the UC Berkeley campus for a prospective student gig, and I was surprised to hear a CS graduate student say that he had time to go out and have fun on the town almost every weekend. The impression I get from graduate school is that this would not be the case, does that sound right? Don't get me wrong, I am perfectly willing to put it whatever amount of work my PhD requires, but as a person who likes to plan out his life more or less, it would be nice to have a sense of what my weekly schedule will look like in grad school.