Not to steer this too off topic, but getting a Professional Engineer's license takes 5 years at the minimum. Basically, you take the first part of the test (8 hours), which can normally only be taken in your last year, and then you need 5 years of work experience (some of which can be spent doing a Master's degree - I only have a bachelor's) in the field, before you can take the second half of the test and get licensed. Basically, you have to work as someone's lackey for five years or so. It's basically a safety thing - because as a PE, you can sign off on building plans and the like, so they want to make sure you have actual work experience.
So, basically if I took the test this year, I could get licensed (assuming I passed both halves) by the time I'm 28.
~kov.