just got my letter today!!! it was so good to hear from my daughter.
There is a great Navy Mom's video on YouTube that shows exactly what the recuits will go thru :-)
The divs are assigned as they arrive... counting up since January 1st. My daughter was in Div 116 back in April... and my son is Div 292 with PIR of 09/09/2011. The 800 division numbers are for special ops. The 900 series divisions are for the performers, such as Band, Color Guard, etc.
Check out the video on navy boot camp: http://www.youtube.com/watch?v=p-aoownLP9Y