The Wormhole wrote:
but the general implication is that all officers are graduates of Starfleet Academy in San Fransisco.
That isn't the impression I got from TOS, only a few mentioned attending the academy. Kirk, Mitchell, and Merik (sp?). The other officers might have gotten their commissions through something like OTS, ROTC, etc.. There are a few pieces of dialog suggesting that Spock didn't
attend the academy, same with McCoy.
And one episode suggests that Uhura might have been a mustang, she was enlisted prior to being an officer.