Law School Discussion

Working for summer firm as a law clerk during the year - what's the difference?

Hi all. I'm a 3L, and I just wrapped up my summer with a firm, which offered me full time employment after graduation, as well as the opportunity to be a law clerk for them during the school year. I'm working three days a week for them. My question is to those of you who have done this: in your experience, what is the difference between being a summer associate and a law clerk? For what it's worth, this firm gave me a real work load over the summer, so maybe being a law clerk won't be much different. I'm just trying to figure out what to expect. Thanks for your input!