The male student said that during the middle of his sophomore year, Lai asked him to place a keylogger on the computers of several CdM teachers, according to the affidavit.
The student initially declined to help, but as the year progressed, he was called upon again to place keyloggers on three science, Spanish and English teachers' computers, the court papers say.
He finally agreed to place the keylogger on a history teacher's computer, according to the court papers.
The student said that when he returned the device to Lai, he was given a copy of an upcoming history test, the affidavit asserts.
During the interview with Anderson, the student allegedly identified 11 other students who were involved in the apparent cheating, the court papers say.
While the affidavit outlines a dozen students involved in the cheating, in letters sent recently to school officials, parents are asking why the board is disciplining only 11 students, with the twelfth being allowed to return to school.
Boss declined to comment.
The student also described to Anderson an early morning in April 2013 when he and Lai allegedly broke into CdM to install a keylogging device, court papers state.
Conversations between the student and Lai included information about meetings for tutoring, pictures of high school tests and discussions about the cheating, according to the affidavit.
"It was clear from the content that Lai and [the student] were using text messaging to discuss strategies on how to continue this elaborate scheme," Syvok wrote.
Lai is wanted by police for questioning but has not been located, said Jennifer Manzella, spokeswoman for the Newport Beach Police Department.
While Lai has eight traffic violations for infractions like driving without a valid license, failing to obey traffic signs and driving while using a cell phone, he has never been charged with a serious crime, according to Orange County Superior Court records.
In parents' letters to district officials, they allege that Lai was tutoring more than 150 CdM teens.
Lai had become known for his ability to help students boost their GPAs, parents said.
The last known phone number for Lai has been disconnected.
History of Cheating
CdM has encountered its share of cheating scandals in the past decade.
In 2004, two students were arrested after hacking into the high school's computers to boost grades. The students collected money, sometimes as much as several hundred dollars, from their peers to raise grades, officials said at the time.
Cheating surfaced again at the school in 2010 when sophomores were caught purchasing test banks from Amazon.
Students were not punished because the banks, which provide test questions and answers for teachers, were not labeled as teacher's editions, were found in the public domain and were available from legitimate retailers, the principal said at the time.