If working in a hospital, the highest rank an RN can go with nursing in their title is Chief Nursing Officer.
Highest ranks outside the hospital are Assistant Surgeon General - through the military or civilian career pathways. Very Prestigious!
A nurse may also become a CEO, Board Member or Entrepreneur.
The highest degree in nursing is a PhD
The highest rank for a skill is 1
The highest ninja rank is kage
The highest academic degree in nursing is the doctorate.
The highest rank is Tai Pan
The highest rank in Halo: Reach is Inheritor.
The black belt is the highest rank in martial arts.
The highest rank you can reach is 46.
Baiji - Baiji is the highest rank you can reach in sumdog, it's the 31st rank in sumdog.
masters in nursing
The highest rank currently known in Platform Racing 2 is UnknownAx with a rank of 60, and he is tied with quesin, but UnknownAx hacked.
Assistant in Nursing (AIN) is the lowest rank in nursing.