The director of a Los Angeles private school who helped doctor actress Felicity Huffman‘s daughter’s test scores has agreed to plead guilty and cooperate with prosecutors, according to court papers filed Tuesday.

Igor Dvorskiy, the former director of West Hollywood College Preparatory School, will plead guilty to racketeering charges on Nov. 20 for allegedly taking kickbacks from college admissions scam mastermind William “Rick” Singer to improve student’s SAT and ACT test scores.

In exchange for his cooperation, prosecutors in the case will recommend a light sentence, according to the plea agreement.

As part of the scam, Singer had his wealthy clients’ kids take their college admissions exams at Dvorskiy’s school, and Singer’s co-conspirator, Mark Riddell, would then correct their tests, prosecutors said.

Dvorskiy’s guilty plea will likely aid prosecutors in proving Singer and his co-conspirators worked together to execute a wide-ranging criminal scam to get wealthy students into top colleges, the Los Angeles Times reported.

Dozens of people — including actresses Felicity Huffman and Lori Loughlin — were busted in Singer’s scheme. In the indictment against Huffman, prosecutors alleged Dvorskiy administered a test to her daughter at the West Hollywood location.

Huffman pleaded guilty to paying $15,000 to inflate her daughter’s SAT scores and was sentenced last month to serve two weeks behind bars.

Loughlin has pleaded not guilty to allegations she paid Singer $500,000 to get her daughters admitted to the University of Southern California as rowing recruits.