If you go into webmaster tools Go to the statistics--> Crawl stats section You will see two columns in a table The PageRank of your pages in Google and Distribution What does this table mean and how do I interpret the results? Thanks
I suggest you dont worry much about these options as Google dont update them often. "Your page with the highest PageRank" This tells you which page in your site has the max PR "The PageRank of your pages in Google" This tells you that how PR is distributed for all your sites pages.