Actress Lori Loughlin, her fashion designer husband Mossimo Giannulli and other prominent parents are pleading not guilty in the college admissions bribery scam.

Loughlin and Giannulli said in court documents filed Monday they are waiving their right to appear in court for an arraignment and plead not guilty.

The couple and more than a dozen other parents were indicted last week on charges of mail fraud and money laundering conspiracy.

Loughlin and Giannulli are charged with paying $500,000 in bribes to get their daughters admitted to the University of Southern California as crew recruits, even though neither is a rower.

They haven't publicly addressed the allegations against them.  

Several other indicted parents have also entered not guilty pleas.

Fellow actress Felicity Huffman and 12 other parents have agreed to plead guilty .

Huffman, the 56-year-old Emmy-winner who stared in ABC's "Desperate Housewives," was accused of paying $15,000 disguised as a charitable donation to have a proctor correct the answers on her daughter's SAT. She and the 12 other parents agreed to plead guilty Monday to a single charge of conspiracy to commit mail fraud and honest services mail fraud.

Prosecutors say they will seek a prison sentence that's on the low end of between four and 10 months for Huffman.

In her first public comments since her arrest, Huffman took responsibility for her actions and said she would accept the consequences.

"My daughter knew absolutely nothing about my actions, and in my misguided and profoundly wrong way, I have betrayed her. This transgression toward her and the public I will carry for the rest of my life. My desire to help my daughter is no excuse to break the law or engage in dishonesty," she said after her plea deal was announced.

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Loughlin, who is best known for playing Aunt Becky on the sitcom "Full House," and Giannulli are accused of paying $500,000 to get their daughters admitted as recruits to the USC crew team, even though neither is a rower.

Authorities say the couple helped create fake athletic profiles for their daughters by having them pose for photos on rowing machines. At one point, a guidance counselor at the girls' high school became concerned their applications were fraudulent, but was ultimately convinced otherwise, court records show.

The Hallmark Channel - where Loughlin starred in popular holiday movies and the series "When Calls the Heart" - cut ties with Loughlin a day after her arrest.

Huffman is charged with paying the admissions consultant at the center of the scheme $15,000 to have a proctor cheat on her daughter's SAT exam. Authorities say the "Desperate Housewives" star also discussed going through with the same plan for her younger daughter, but she ultimately decided not to.

Authorities say the consultant, Rick Singer, met with Huffman and her husband, actor William H. Macy, at their Los Angeles home and explained to them that he "controlled" a testing center and could have somebody secretly change their daughter's answers, authorities say. Huffman and Macy agreed to the plan, Singer told investigators.

Macy was not charged; authorities have not said why.

Huffman, Loughlin and Giannulli have not publicly addressed the allegations.

They and the other parents are charged with conspiracy to commit mail fraud and honest services mail fraud, which carries up to 20 years in behind bars. But first-time offenders typically get only a fraction of that, and experts said they believe some parents may avoid prison time if they quickly agree to plead guilty.

Other parents charged in the scheme include the former co-chairman of an international law firm and the former head of a Silicon Valley venture capital firm.

Gordon Caplan of Greenwich, Connecticut, who was co-chairman at Willkie Farr & Gallagher, is accused of paying $75,000 to get a test supervisor to correct the answers on his daughter's ACT exam after she took it. Caplan's firm said after his arrest that he has been placed on a leave of absence.

Manuel Henriquez, who was CEO and chairman of Hercules Capital in Palo Alto, California, and his wife, Elizabeth Henriquez, participated in the cheating scheme and bribed the tennis coach at Georgetown to get their daughter admitted as a recruit, authorities say.

The tennis coach, Gordon Ernst, has pleaded not guilty to accepting $2.7 million in bribes to designate at least 12 applicants as recruits to Georgetown. Former UCLA men's soccer coach Jorge Salcedo, Wake Forest University women's volleyball coach William Ferguson and former USC water polo coach Jovan Vavic have also pleaded not guilty in the scheme.

Three people have pleaded guilty in the scheme, including Singer, who began cooperating last year with investigators. The former head women's soccer coach at Yale, Rudy Meredith, has also pleaded guilty to accepting bribes.

Meredith inadvertently helped investigators uncover the sprawling scheme by dropping Singer's name during a recorded conversation he had last year with a father who he had solicited a $450,000 bribe from. The father was under investigation in Boston for securities fraud when he told authorities that Meredith had promised to get his daughter into the school in exchange for cash.

(Copyright 2019 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)