The "just cruising" high school mode is not uncommon for really bright but unchallenged or unfocused kids as well as tossers striving to drop out or be kicked out. Judging the way Harry has shaped up in the Army I belive he definitely falls into the unfocused group.
So far he has passed his Sandhurst course, qualified as an Officer in the field of war, earned the respect of his peers, passed basic flying, shows promise as perhaps a "Natural" pilot and, despite his self depricating statement that he didn't have the brain capacity to fly an Apache, he may yet.
If the naysayers had been believed, he did not pass his A or O Levels (or whatever they call them there) on his own but had sneaky phantom exam sitters and was barely literate. As for geography, well if it didn't have a Polo field and clubs it just wasn't on the map? Well let's face it, he was not a prodigy, just a normal kid.
I, for one, will be chuffed if he does qualify despite the added external pressures and stresses of being "The Spare" with his very own jeering section (and what very Royal special treatment that is), but even if he doesn't, he will still be flying helicopters and thats a damned sight more than any of the euro/journo/trash can say.
Up there you are on your own. No one else can fly it for him, nor indeed would they, because, let's face it, at our most cynical, we know someone would pot him for not being the real deal. And I am not talking about being a Prince!
ps: When the family get together if they run out of war stories they can always default to Polo. 
Perhaps I should have used the past tense. "Judging the way Harry has shaped up in the Army I belive he definitely fell into the unfocused group. 
