Huffman, the Emmy-winning star of ABC's "Desperate Housewives", is accused of paying $15,000 that she disguised as a charitable donation to cheat on her daughter's college entrance exam.
The proceedings came three weeks after 50 people in all were charged with taking part in a scheme in which parents bribed coaches and helped rig test scores to get their children into some of the nation's most selective universities, including Yale, Stanford, Georgetown and the University of Southern California.
People magazine reports that Loughlin, who stands accused, along with her husband Mossimo Giannulli, of paying $500,000 to have her daughters designated crew team recruits in order to facilitate their acceptance at USC, was seen running errands with Isabella.
A USA judge issued a stern warning to the parents included in the college admissions scandal on Wednesday: Don't obstruct justice. The parents even sent Singer photos of each daughter on an ergometer, the rowing machine, the complaint says. In the wake of the scandal, Netflix dropped the actress from Fuller House and Hallmark, Loughlin's longtime home, severed all ties with her.
CNN reached out to representatives for Huffman, Loughlin and Giannulli but has not heard back.
Neither Loughlin nor Giannulli have entered pleas in their cases, but the charges of conspiracy to commit mail fraud and honest services mail fraud carry up to a maximum of 20 years in prison. (Neither daughter ever rowed crew.) In light of her indictment, Louglin was sacked by Fuller House as well as the Hallmark Channel.Huffman is accused of bribing an SAT protector to improve the score of her daughter's examine.
A California entrepreneur has become the first of 33 parents charged in a college admissions scam to agree to plead guilty. An email was sent to Sartorio's lawyers seeking comment.
Other parents charged in the case include the former co-chairman of an worldwide law firm and the ex-head of a Silicon Valley venture capital firm.
Former Yale women's soccer coach Rudy Meredith also pleaded guilty.
The case set off a furor over the feverish competition to get into college and the lengths to which status-seeking parents will go.
Loughlin appeared as she walked out of this courthouse and grown into a black SUV with her attorneys.
A fan shouted, 'I love you, Felicity!' as Huffman left court with her brother.