Donald Trump has opened up a new line of attack on Hillary Clinton, writing Monday on Twitter that her intellect is 'highly overrated' – and recalling, correctly, that she once failed the Washington, D.C. bar exam.

'Does anyone know that Crooked Hillary, who tried so hard, was unable to pass the Bar Exams in Washington D.C. She was forced to go elsewhere,' his tweet read.

'Crooked Hillary's brainpower is highly overrated.Probably why her decision making is so bad or, as stated by Bernie S, she has BAD JUDGEMENT,' Trump added.

HE WENT THERE: Donald Trump reminded his Twitter audience on Monday that Hillary Clinton failed the Washington, D.C. bar exam in 1973

ALMOST: Trump's claim that Clinton 'was forced to go elsewhere' isn't quite true since Hillary had already taken the Arkansas bar exam when she found out she had come up short in D.C.

NOT SO SMART? Hillary Clinton ended up accepting a law license in Arkansas, where she had followed Bill

Clinton passed the bar in Arkansas in 1973, only later finding out that she had fallen short with the D.C. exam.

In that respect, Trump's claim that she 'was forced to go elsewhere' misses the mark.

Her Washington lapse was a secret for three decades until she revealed it, in passing, in her 2003 memoir 'Living History.'

But even then she sought to frame her crushing shortcoming as a positive, suggesting it as a reason she followed Bill Clinton to Arkansas.

'Despite the satisfaction of my work, I was lonely and missed Bill more than I could stand,' she wrote of her time working at the newly created Children's Defense Fund, a stone's throw from Harvard University.

'OVERRATED' INTELLECT: Trump's latest attack focuses on Clinton's intellect

'I had taken both the Arkansas and Washington, D.C., bar exams during the summer, but my heart was pulling me toward Arkansas. When I learned that I passed in Arkansas but failed in D.C., I thought that maybe my test scores were telling me something.'

Still, the Yale Law School graduate's failure put her in the bottom one-third of test takers that summer.

Former Watergate reporter Carl Bernstein wrote in his own biography of Clinton that 817 people took the bar exam in D.C. in 1973. 551 of them passed.

And many of the successful lawyers, Bernstein notes, had far less prestigious law school pedigrees.

ALSO WHIFFED: Future first lady Michelle Obama failed the Illinois bar exam on her first attempt

'For the first time in her life, she had flamed out – spectacularly,' he wrote, 'given the expectations of others for her, and even more so on her own.'

Clinton wasn't the only future high-octane politician who failed to pass a bar exam.

Michelle Robinson – later Michelle Obama – failed the bar on her first attempt in Illinois, despite a Harvard Law School degree.