Hillary Clinton professes to know nothing about the various levels of classification for confidential information used by the State Department that she ran, so can Democrats — including President Obama — finally dispense with the silly claim that she is the “most qualified” person ever to seek the presidency?

The FBI, which cleared Clinton of criminal wrongdoing in the use of her private email server but admonished her for extreme carelessness, released a summary report of its investigation yesterday — just as America headed off for a long holiday weekend.

And a quick review seems to confirm that Clinton was — well, let’s just call it lucky to skirt federal prosecution for her mishandling of classified material. That appears to be thanks to her aforementioned cluelessness, or at least her claims of same.

Asked during her FBI interview, for example, about an email chain with “(C)” markings that State determined to contain confidential information, “Clinton stated that she did not know what the ‘(C)’ meant at the beginning of the paragraphs and speculated it was referencing paragraphs marked in alphabetical order,” the FBI report said.

Clinton and her aides seemed unaware of or uninterested in State Department policies on email communication, including of classified material. Presented by the FBI with a series of emails containing classified information Clinton couldn’t seem to recall any of them and said she relied on others to handle and mark classified material.

It essentially amounts to the Sgt. Schultz defense — “I know nothing!”

But it isn’t just cluelessness at work here. It’s extreme sloppiness, too. The FBI summary indicates, for example, that a laptop containing an earlier archive of Clinton’s emails that had been in the possession of an aide went missing and could not be located by the FBI.

For all her faults Hillary Clinton is not stupid. Her cluelessness was willful. It makes answering “I don’t recall” over and over again a true statement. Or at least one that is difficult to prove false.