I want to share my story with everyone out there who thinks the CNO will not allow a 4th write. I graduated from BScN program in 2011, I wrote my exam 3 times and failed by just a few marks each time and thought my nursing dreams were over. It was my mothers idea for me to write the CNO a letter requesting a 4th attempt. I called the CNO and spoke with a lady who was extremely helpful she explained to me you cannot have a 4th write BUT you can request one of your exams to be "nulled". So I faxed a letter requesting another 3rd write. In the mean time I was filling out paper work to write my CPNRE (RPN exam). I received good news I was allowed to write my RPN exam and was granted a 2nd attempted on a 3rd write ( in other words a 4th write). I wrote my RPN exam in Oct 2013 and my RN exam in Nov 2013. I didn't tell anyone I was writing so I had no pressure or test anxiety and was success on both exams!