It is not only the famous parents who have already faced stiff penalties.

Homayoun Zadeh, an associate professor of dentistry at U.S.C., who prosecutors say also conspired with Mr. Singer to pay a bribe to get his daughter admitted to the school, has seen his career derailed.

He has been placed on leave by the university, whose interim president described it as essentially a step toward termination. In a motion asking the judge to modify Mr. Zadeh’s conditions of release, so that he could speak at conferences in Malaysia, Taiwan, Canada and France, Mr. Zadeh’s lawyers said that he had also lost three book contracts. (Most of the parents have been barred from leaving the country.)

According to the criminal complaint, Mr. Zadeh and his wife struggled to come up with the $100,000 they had agreed to pay as part of the arrangement, with Mr. Zadeh’s wife saying at one point that they were refinancing their house to make the payments.

Prosecutors have accused Gregory Colburn, a radiation oncologist in Palo Alto, Calif., and his wife, Amy, of conspiring with Mr. Singer to cheat on their son’s SAT exam. One of their lawyers, Patric Hooper, said this week that Dr. Colburn’s career had been severely damaged because of a chain of consequences that result when a doctor is charged with a crime.

Already, he said, a state licensing board had begun an investigation of Dr. Colburn. Dr. Colburn had to notify Medicare and Medicaid that he was under investigation — and they could suspend him if they chose to, Mr. Hooper said, which would make it very difficult to practice. He has also had to notify the hospitals where he is on the medical staff.

“His reputation is destroyed before he’s even given an opportunity to defend himself,” Mr. Hooper said.