If you were to get picked up as a Midshipmen, they may not take any of your credits. And the recruiter (enlisted side anyway) might only be GUESSING if he tried to quantify that number.
If you want to be an officer, go talk to an Officer ROTC-type recruiter or contact the Naval Academy directly (use those finely-honed google talents). An enlisted recruiter is there for one reason alone...to get you to enlist. This is not bad; it's their job. However, once you enlist in the Navy, you lose a big upper-hand in the advantage when it comes to Officer programs. Trust me, you and 100 other fresh-faced folks with equal test scores will be in power school waiting for the USNA to pick only a few of you!
What DD said is right. I mostly got elective credits out of my A school/power school training.
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