A CPA certification and a graduate education would both be vary advantageous in your professional career, though the CPA certification will be MUCH cheaper to obtain.
Some employers prefer professional certifications and some prefer graduate level educations, but ALL employers would pick someone how has both over someone who has only one.
You could take that CPA exam either during or after graduate school. Either way, if you want to pass the first time I can help. I'm a training consultant with Gleim Publications. We specialize in CPA exam preparation. Call me at 1-800-874-5346 extension 246 and visit us on the web at
http://www.gleim.com