Donald Trump attacked Hillary Clinton on Twitter Monday for failing to pass the D.C. bar exam after graduating from Yale Law School.

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 — Donald J. Trump (@realDonaldTrump) August 29, 2016

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 — Donald J. Trump (@realDonaldTrump) August 29, 2016

Clinton took the Arkansas bar exam before she found out she came up short on the D.C. exam, according to the Daily Mail.

The former secretary of state wrote about failing the D.C. exam in her 2003 memoir, Living History.

“Despite the satisfaction of my work, I was lonely and missed Bill more than I could stand,” Clinton wrote. “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.”