Additionally, the way the appointment system works is it is geo-centric at first (MOC).
No offense to any congressional district regarding their HS, but for example, No VA is considered a very competitive area for noms.. The state is known to share the wealth , I.e.. the MOCs talk, and it is common to get only one nom. no matter how great your stats because each Sen. Could have 750+ applicants for those ten spots. Just getting a nom. In VA feels like you have conquered the world when you realize that statistically you made the cut of 1% selected.
~ Fairfax county public high schools in No Va., also are consistently ranked top 100 nationally by organizations, such Time, Money, Fortune, USNWR.
Yet, only 1 will win that appointment just like the state that is nationally ranked as the lowest educational system by the NEA. The avg SAT for Fairfax County, best sitting, not super scored is @1300. Key words avg and best sitting, especially when you realize that they will retake the tests just like everyone else. Their stats will increase and many will come off the NWL.
Now, add into the equation that states like NC you can get 3 noms, and those stats can vary greatly compared to competitive states.
JMPO, but I suggest you go onto the nomination forums, and search for your district if you can find it or the state, and see if they have posted their stats. As I said the first step is to get a nom., the second is to win that slate. What someone's stats are from CA when you live in Arkansas will matter when you get to the national level, and IMPO, you should want to get the appointment before hitting that pool.
Caveat: LOAs, but understand LOAs are called the golden ticket for a reason....they are rare, otherwise posters would call them a dime a dozen. In that case, as Time2 stated it is the WHOLE package, stats, and ECs