Aaron Sibarium of the Washington Free Beacon details recent bad news for the woman who leads the nation’s oldest university.

Harvard University president Claudine Gay plagiarized numerous academics over the course of her academic career, at times airlifting entire paragraphs and claiming them as her own work, according to reviews by several scholars.

In four papers published between 1993 and 2017, including her doctoral dissertation, Gay, a political scientist, paraphrased or quoted nearly 20 authors—including two of her colleagues in Harvard University’s department of government—without proper attribution, according to a Washington Free Beacon analysis. Other examples of possible plagiarism, all from Gay’s dissertation, were publicized Sunday by the Manhattan Institute’s Christopher Rufo and Karlstack’s Chris Brunet.

The Free Beacon worked with nearly a dozen scholars to analyze 29 potential cases of plagiarism. Most of them said that Gay had violated a core principle of academic integrity as well as Harvard’s own anti-plagiarism policies, which state that “it’s not enough to change a few words here and there.”

Rather, scholars are expected to cite the sources of their work, including when paraphrasing, and to use quotation marks when quoting directly from others. But in at least 10 instances, Gay lifted full sentences—even entire paragraphs—with just a word or two tweaked.

In her 1997 thesis, for example, she borrowed a full paragraph from a paper by the scholars Bradley Palmquist, then a political science professor at Harvard, and Stephen Voss, one of Gay’s classmates in her Ph.D. program at Harvard, while making only a couple alterations, including changing their “decrease” to “increase” because she was studying a different set of data.

The four papers that include plagiarized material comprise a sizable portion of Gay’s academic work. Gay, who is Harvard’s 30th president, has authored just 11 peer-reviewed articles.