I haven't heard much about any Big 4 internships that make you QUIT school. If your referring to taking a semester  off, there may be a few fall and winter internships out there, but 90% are in the summer. And what is considered working you to death? The summer interns who I know, and there are several, all worked 40 to 50 hours a week all summer. Even in the fall I doubt you would be worked to death, unless 50 to 60 hours is considered death. I work at one of the big 4 and even in the busy season it's not too bad, except for a couple of killer weeks.