Quote from doggybour
Does this mean they have 4 days off. Wow that's cool. i would opt for the 12 hour shift.
Hold on, don't be so quick to decide that, before even going through nursing school clinicals! It can be extremely hard on the body and psyche. Some people think they will be a day shifter or night shifter "for sure" and then when they do that shift, they find they need to switch. Some people are sure they want 8's or 12's, and find they need something else, or even part-time. Per-diems decide they want permanent shifts.
You would have four days off, that's true, but remember they might never be together (depends on scheduling needs of your unit); sometimes you get a few days together, all together, or one day on, one day off. You will be working weekends or alternating weekends or some such, as well as holidays. I can't remember the last time a "12 hour" shift lasted 12 hours; thirteen or fourteen is more the norm. If you work in a mandated hospital, that's a different picture, too.
That said, I choose to work nights, 3 12's because of family obligations. One of my co-workers, a former classmate, thought she'd do exactly the same, and now she works 5 8's, days. You never know!