The mother of Yusi Zhao, identified only as Mrs. Zhao, said she donated the money to William Singer's foundation on April 21, 2017, at his request nearly a month after her daughter received an offer from the university, according to a statement provided on Friday by her lawyer Vincent Law, a Hong Kong-based partner at Mayer Brown.
Yusi Zhao is also a victim, her mother said in the statement.
Zhao thought she was making a donation to Singer's foundation, the statement said, adding that she was unfamiliar with the US college admissions process.
The mother says he told her the money was for salaries of academic staff, scholarships and athletics programs.
In a statement provided through her attorney, the woman identified as Mrs. Zhao admits giving $6.5 million to the foundation of William "Rick" Singer, the ring leader of the scam. The parents of Sherry Guo, who paid $1.2 million to get their daughter into Yale, are the only others known to have paid Singer more than a $1 million.
Stanford University released a statement following the report.
A spokeswoman for Morgan Stanley told CNN the company is cooperating with investigators, and said Wu had been terminated from his job.
Stanford said it wasn't aware of the $6.5 million payment to Singer until it was reported by the media and did not receive that amount of money from Singer or from the family working with the consultant.
Neither Ms Zhao nor her parents, who live in Beijing, has been charged and it is unclear whether they are being investigated.
Of the 50 people charged, 33 are parents.
Prosecutors allege the actress and her husband, Mossimo Giannulli, paid $500,000 to a fake charity to get their two daughters accepted into the University of Southern California, falsely designating them as crew recruits. The scandal has embroiled high schools, test administrators, guidance counselors and students - and now a wealthy mother in China.
Prosecutors say the parents paid Singer vast sums to help secure their spoiled scions a spot at top colleges - which he achieved by either bribing exam officials to doctor their entrance exams or paying off coaches to name the kids as sham athletic recruits.
Huffman was among more than a dozen parents who pleaded guilty to a charge of conspiracy to commit fraud last month.
Zhao Tao, chairman of Shandong Buchang Pharmaceuticals Co., said in a statement on the company's website on Friday that the issue regarding his daughter's studies in the U.S.is a family matter and will not affect normal business operations.
A Stanford University student walks in front of Hoover Tower on the Stanford University campus in Palo Alto, Calif.