The incident, which opened in a foreign language class at Lehman High School in Kyle, Texas, caught other students in cell phone videos that later went viral. That footage shows the substitute teacher repeatedly punching the girl in the face before throwing her to the ground and stoning her on the head.
Students alerted school officials and the teacher was immediately removed from the classroom, the Hays Consolidated Independent School District (CISD) said.
Sheriff's deputies responded, and after interviewing students and reviewing several videos, the teacher, identified as 32-year-old Tiffani Shadell Lankford, was arrested.
Lankford is facing a charge of aggravated assault, the sheriff's office says. He was booked into the Hays County Jail and appeared Saturday morning in court. He was read his charges and bond set at $ 10,000, according to Hays County Sheriff's Deputy Stephen Traeger.
CNN could not determine whether he had legal representation.
Lankford was fired immediately, the school district said, adding that it was cooperating with the investigation. district statement. "We take the safety and security of our students very seriously. We have taken swift action when this incident happened and will do everything necessary to protect our students."
Lankford has worked for Hays CISD since late August, the district said, and worked in a classroom 17 times prior to this incident. The district noted that all substitute teachers are required to pass a criminal background check. "It's inconceivable what this adult did to one of our students."
The student was taken to his father's hospital, the sheriff's office said.