Don't get snippy.
The State Department would not have classified something that was public knowledge, such as a NYT article...but another agency such as the FBI, CIA or DoD probably would because they have different rules and standards for classification than the State Department. So just because the FBI deemed something classified does not mean the State Department would...
A former intelligence analyst who worked at both the CIA and the State Department explains how different approaches to classifying information sits at the heart of the scandal that threatens to undo Hillary Clinton....
"...Even allowing for those facts, however, the uproar about the Clinton email server ignores the reality that, for very good reasons,
the CIA and the State Department have different approaches to classification and classified information. These different approaches result from the different functions of the agencies...
The State Department is different. Unlike the CIA, it faces outward to the public and other countries. In fact, it exists for the very purpose of talking to foreigners, many of them not especially friendly. Department officials must regularly exchange sensitive information or proposals with these foreigners. State Department officials often conduct their diplomacy in unsecure locations such as restaurants, hotel lobbies, or over regular telephone lines because there is no realistic alternative. When a major political figure in a foreign country calls the U.S. ambassador on a commercial telephone, is the ambassador supposed to refuse the call? If a political officer is invited to lunch by an interlocutor, should he or she restrict conversation to the weather? Of course not. Business must be done. Obviously, then, it is not a natural thought that business conducted in a busy restaurant in a foreign country must immediately then be treated as a state secret.
Also,
the CIA’s notion that publicly known facts reported in newspapers should be treated as classified does not work well in the State Department’s environment. The State Department usually cannot conceal its interest in a topic because when it is interested in something its diplomats often must go talk to foreigners about the developments. The department has to live in the real world, where news stories — even if they report classified facts about the activities of other agencies of the government — actually exist and have effects that must be dealt with, often by them. The differences continue: Unlike CIA officers, State Department officials are not discouraged from admitting for whom they work. Quite the opposite; they are meant to be proud and attractive representatives of their country. Finally, foreigners and journalists are an everyday presence in the State Department because they have to be if the department is to inform, persuade, and coerce foreign publics and governments while remaining accountable to American taxpayers.
So, the two agencies of necessity have different approaches to classification. State Department officials are used to operating in discreet but not classified environments, so their first reaction is not to classify things. Moreover,
senior State Department authorities are the classifying authorities for their own information, so they exercise their own discretion in making those decisions. Career diplomat, former Ambassador Princeton Lyman, for instance, told the Washington Post that he was chagrined and surprised to find that some of his emails found on the Clinton server were now considered classified. He commented that, “the day-to-day kind of reporting I did about what happened in negotiations did not include information I considered classified....”
https://warontherocks.com/2016/03/w...ied-where-you-stand-depends-on-where-you-sit/