He began the relationship with her when she was 15, and in September 2006 she became pregnant and later suffered a miscarriage, she said.
Authorities first got involved in the case in February 2007. At that point, Rooney, a captain in the California National Guard, was arrested after he allegedly pointed a gun at the Foshay student's stepfather. After the alleged gun incident, LAPD detectives investigated allegations that the student and Rooney were having sex. But, ultimately, prosecutors did not charge him with sexual assault.
The student testified that she sought the advice of a Foshay administrator after the gun incident and Rooney's arrest. She said she admitted the relationship to police and then went to the administrator because she was worried Rooney would go to jail.
"I was scared and confused," she said. At the end of the meeting, the administrator told her she "needed to recant everything," she said.
Shortly after, she went to the Los Angeles district attorney's office and denied to a prosecutor that she and Rooney had had sex, she testified. No charges related to their alleged relationship were filed.
The testimony comes as the LAUSD is investigating the circumstances involving Rooney's transfer.
After Rooney's arrest in 2007, school officials did not do an independent investigation, which is required by district policy. Instead, officials transferred him from his position as assistant principal at Fremont High in South L.A. to a non-school site and then to a position as assistant principal at Markham, where police allege he found two new victims.
Rooney was arrested in March on suspicion of molesting the 13-year-old Markham student. Following that arrest, the former Foshay student decided to come forward, she said.
She testified that she kept a scrapbook that included photos of her and Rooney kissing and visiting his parents in New York. She told the judge that she continued the sexual relationship with Rooney even after the initial police inquiry in 2007 and that the educator got her to gather up all the items connecting them.
She testified that she gave the items to a student who passed it to the school administrator she had spoken to. Prosecutors produced parts of the scrapbook Thursday but did not say where they got it.
Los Angeles Police Capt. Fabian Lizzaraga, who oversees child sex crimes, said his detectives were investigating the actions of the administrator, who did not return calls seeking comment.