Haven't worked in awhile....

I don't know where to post this and I've looked online and can't find any straight answers. Hopefully someone here can help. I was a CNA for almost 5 years. I haven't worked since 12/03 (a month before my 1st was born). I tried going back and only worked for a weekend in 2005 (not sure if that counts for anything, lol) but didn't like being away from my son. Anyway... I was wondering if I decided I wanted to work again, would I have to take the whole course over again? Or just the test? Or what? Anyway any advice?