The 15-year-old girl who allegedly shot seven victims, two of them fatally, in an attack at a Christian school in Wisconsin on Monday represents a rare incident of a female school shooter, according to the FBI and U.S. Secret Service.

Police identified the suspect in the shooting at Abundant Life Christian School in Madison as Natalie Rupnow, a student at the school who went by the name Samantha.

According to police, Rupnow died of a self-inflicted gunshot wound after allegedly killing a teacher and a classmate and wounding five others, including two students in critical condition.

“It’s very sad but a rarity that there is a female school shooter,” said Don Mihalek, a retired senior special agent with the Secret Service and ABC News contributor. “Historically, and the studies show, it is typically white male students or former students who commit these acts of violence in schools.”

The U.S. Secret Service’s National Threat Assessment Center (NTAC) examined 41 cases of targeted school violence between 2008 and 2017, including those in which no one was injured, and found that 83% of the suspects were male and 17% were female.

Another study by the FBI found that of the 49 shooters involved in 48 active shootings in the United States in 2023, 98% were male.

Among the perpetrators of school shootings in 2023 was 28-year-old Audrey Hale, who killed three students and three staff members at Covenant School in Nashville, Tennessee, where authorities say she was once a student. According to police, Hale owned seven firearms, including three that were used in the private school shooting. Officials said Hale was being treated for an unspecified emotional disorder. Hale was killed at the scene by two officers.

A police spokesman told ABC News that Hale was assigned female at birth, pointing to a social media account linked to Hale that used the pronouns “he/him.”

An FBI investigation of 345 suspects involved in 333 active shootings between 2000 and 2019, including 62 in education, 332 were male and 13 were female.

The Gun Violence Archive, a website that tracks all shootings in the United States, found that of the 805 school shootings since 2012, 157 involved female “participants.”

The National Center for Education Statistics also found that 94% of active shooters in education between 2000 and 2022 were male.

Madison police investigators have not provided a motive for Monday’s school shooting, nor have they said whether the victims were specifically targeted.

The suspect’s parents cooperated with the investigation, Madison Police Chief Shon Barnes told ABC News.

Students from kindergarten through 12th grade attend the Christian school. Police said the shooting was confined to “one classroom in a study hall full of students of various grade levels.”

Police also have not said where the suspect got her hands on the gun used in the shooting.

“In almost all of these situations, the students who have access to guns have generally gotten them from their parents or family,” Mihalek said.

Mihalek said one of the few active shooters he could remember in recent years was then-37-year-old Portia Odufuwa, who opened fire at Love Field Airport in Dallas in 2022 before being shot and injured by police became. No one was injured in the shooting and Odufuwa was found not guilty by reason of insanity of grievous bodily harm in 2023.

Other active shooters include Jennifer San Marco, a former U.S. Postal Service employee who police say shot six people at a mail processing and distribution center near Santa Barbara, California, in January 2006 after killing her neighbor . San Marco died by suicide.

In 2015, 29-year-old Tashfeen Malik and her 28-year-old husband Syed Rizwan Farook, both of whom had supported ISIS, fatally shot 14 people at a December 2015 Christmas party in San Bernardino, California. Malik and Farook were killed in a shootout with police.

Mihalek said investigators would likely comb through the social media footprints of the suspect in the Wisconsin school shooting in search of a motive.

“I think there are a lot of things on social media that cause mental health crises in children, especially girls,” Mihalek said. “Instead of finding your self-worth in good grades, good performance on a sports team, good musical instrument playing, and teachers and parents telling you you did a good job, what matters is how many likes there are and how many people like yours View feed.” “

Mihalek said many girls have been victims of online bullying.

“It tears the fabric of a child apart and a lot of them don’t know how to deal with it because at that young age they don’t really have the ability to understand how to deal with a bullying incident like that,” Mihalek said . “In all schools, the key is to address behaviors and pathways to violence. The critical behaviors that set children on the path to violence are social stressors and grievances. If you’re being bullied online and have multiple people telling you that you’re no good, that can easily turn into a complaint.”

ABC News’ Jack Date and Briana Stewart contributed to this report.