Accuracy of NPC

We have a junior in high school. Beginning to narrow down her list of schools to apply to in Fall 2015 for entrance as a freshman in Fall 2016. We’ve been running some NPCs for a variety of schools and we were astonished to get a very low net price from U of Iowa. We are OOS. I put the numbers in again, just to make sure I did not make a mistake. Same result.

We were estimated a combo of Pell Grant, Admissions Award and Financial Award.

Can anyone give me an idea of the accuracy of the NPC for U of Iowa, and whether we can expect the same package for four years, assuming finances remain roughly the same?

Thank you.