My wife is considering going to school to become a pediatric nurse, should she go to a vocational school ?

I would encourage you and your wife to look into a community college or university. Vocational school usually are pretty high in cost and charge interest when payment comes due. Vocational schools also offer financial aid but take all of it for themselves causes you to get loans for the remaining cost. Its different when you go to a CC or uni because you get the financial aid check sent to you and spend it how you want to spend it. Yes, vocational school is quicker and at times requires less to get into the program but why spend so much money, especially in this economy, when you can get the same and sometimes better quality program for a better price.

She should go to nursing school.

maybe