To shed some light on the later than normal decisions as to acceptance or prep school offers, the admissions office is currently understaffed due to some retirements and folks moving to other jobs, therefore the process is a bit later than normal. My DS is from California and a M/N at KP. To answer the question of USNavy 1019 and others that would be interested in the prep school (NMMI), YES take if offered. My DS went to NMMI and it put him in a great position upon arrival at KP. There are usually 40 sponsored preps that are sent by USMMA. This is their sole prep school. If you maintain a certain GPA and keep out of trouble, you are pretty much guaranteed in to KP. Out of the 40 sponsored preps, about 33 made it to KP. Although my DS loved to hate NMMI, it truly prepared him academically as well as put him in the right mind frame to attend KP. His first year at KP was a bit of a breeze for him and the other preps. They knew the game and how to play it. Academically they were well prepared for the rigorous course set. He maintained a 3.3 throughout (for a SA, those are some decent grades). His fellow preps faired about the same. I would certainly let anyone you can talk to at admissions know that you would be interested in NMMI if offered. They will only offer to those they feel are not quite ready (typically academically) for KP at this point but with a prep experience will be a candidate for the following year.
If one makes it to NMMI, they do have to apply again the following year to KP but NMMI helps the cadet through the process. The only additional thing that the candidate must do is to get a congressional nomination again. In most cases, this is just jumping through some hoops again and due to the commitment of KP to sponsor the prep, the nomination is pretty much a sure thing.
Good luck to all from California, KP is a wonderful experience and fantastic education. It truly is the best kept secret of the SAs.