this is interesting, only because i did the opposite of what everyone here is suggesting. I left school for a bit to daytrade. Why? Well i would rather have a "gap" in my resume during college, when on campus recruiting makes landing a job much easier. Secondly, its a good experience. The way I see it, trading will always be there, but on campus recruiting will not. I would hate to graduate, go into daytrading, find out its not for me, then try and find a job. I'd rather try it out (people leave school for all sorts of reasons/study abroad/travel/ect.), find out its not for me, then go back and get a job through on campus recruiting.
What i would hate to see is what I just saw. There are 2 kids from berkley. One was an analyst at Lehman bros, the other some operations guy. They both left their jobs after a 1 1/2 years to work for some literally insane trader for a news advisory. (i don't know if ET lets me bash another site, but just think of Val Kilmer in Top Gun)
They are basically getting scammed; talk of an IPO this, ipo that. No salary, and they are trading their own accounts. They are both very naive; its there first trading job they every applied to. They don't even know what a prop firm is. They try to pull off daytrades with their scottrade accounts with that ridiculous commish! They are working with two other kids that moved from NY and were HS dropouts. They work out of small room in the back of a horse ranch, I shit you not. (granted, the horse ranch is very nice)
Now how is that supposed to look when the guy at Lehman trys to find a job after this daytrading incident? Horrible. (lets put it this way. The "head trader" doesn't use an execution platform. He calls all his order in through a retail broker. RIDICULOUS!
What I would say is this. Figure out if daytrading is for you BEFORE you graduate, unless you can get into a firm that will train you/possibly pay you after graduating. Do not, for the love of god, graduate with your degree and think that its going to land you a job if you fool around daytrading. If you plan on joining a prop with your own capital after graduating, just be damn sure its what you want to do. If you can't figure it out, I'd take some time off to see if its for you. That way if it doesn't work out, you'll always have the option of writing off that experience as an internship/time off during your undergrad when your choices won't be judged as harshly by employers after you graduate.
People will never overlook your mistakes. However, as a general rule, people are more inclined to forgive dumb shit you did in undergrad as opposed to 2 yearsout in the workforce. Just read the other thread about a trader who quit. People on this own message board have been telling this guy on ET to make up a fake company and have his spouse be the secretary and his best friend be the CEO of the dummy company. Despite being incredibly unethical and humiliating (just think of the position your wife is in for god's sake), the fact that people here would even suggest anyone do this should show you JUST HOW DETRIMENTAL it would be to find out daytrading isn't for you AFTER college, after foregoing potential career paths.
The great thing for you is that you've got plenty of time to figure this out before you graduate, however you like (trade as a hobby, join a prop during your summer time, take a semester off, whatever)
good luck man.