A former college entrance exam administrator has pleaded guilty to participating in a vast college admissions cheating and fraud scheme, on the same day a wealthy parent is set to face sentencing for his own role in it.

Igor Dvorskiy, 53, pleaded guilty in a Boston courtroom on Wednesday morning to conspiracy to commit racketeering, and faces up to two years in prison at sentencing.

Federal prosecutors say that Dvorskiy accepted about $10,000 in bribes per student to allow a corrupt test proctor to secretly take SAT and ACT college entrance exams on their behalf or correct their answers.

His plea took place hours before title insurance company executive Toby Macfarlane faces sentencing for conspiring to bribe University of Southern California employees to secure the admission of his children as fake athletic recruits.

Igor Dvorskiy, left, a former standardized test administrator for the College Board and ACT, is seen in March. He pleaded guilty in a Boston courtroom on Wednesday morning

The West Hollywood College Preparatory School was one of the places where the cheating took place. It is owned by Igor Dvorskiy, not pictured

Title insurance company executive Toby MacFarlane is seen in April. He faces sentencing for conspiring to bribe USC employees to admit his children as fake athletic recruits

Macfarlane, 56, pleaded guilty in June to conspiring to commit mail fraud. Prosecutors have asked a federal judge to sentence him to a year in prison.

Prosecutors said Macfarlane paid $400,000 in sham consulting fees to Singer, some of which he passed on to University of Southern California coaches as bribes, and $50,000 to an account controlled by an official who participated in the scheme.

Those payments helped facilitate the admission of his daughter and his son to USC as fake soccer and basketball recruits, prosecutors said.

Macfarlane and Dvorskiy are among 52 people charged with participating in a scheme in which wealthy parents conspired with a California college admissions consultant to use bribery and other forms of fraud to secure the admission of their children to top schools.

William 'Rick' Singer, the consultant, pleaded guilty in March to charges he facilitated cheating on college entrance exams and helped bribe sports coaches at universities to present his clients' children as fake athletic recruits.

The 35 parents charged since March include 'Desperate Housewives' star Felicity Huffman, who was sentenced to a 14-day prison term after pleading guilty, and 'Full House' star Lori Loughlin, who is fighting the charges.

'Desperate Housewives' star Felicity Huffman, was sentenced to a 14-day prison term after pleading guilty, is seen with husband William H. Macy in September

Actress Lori Loughlin, front, and husband, clothing designer Mossimo Giannulli, are seen in April. They are continuing to fight the charges against them

Dvorskiy, who was the director of a private school in Los Angeles, served as a compensated test administrator for the companies that run the SAT and ACT college entrance exams, prosecutors said.

He pleaded guilty to conspiring to commit racketeering as part of an agreement to cooperate with authorities in the ongoing investigation, which has been dubbed 'Operation Varsity Blues.'

Prosecutors have agreed to seek just two years in prison when he is eventually sentenced, Assistant U.S. Attorney Leslie Wright said in court.