Charges against a Prince George’s County teacher who was accused of assaulting a female student during an argument captured on video last year have been dropped, prosecutors said Wednesday.

In November, Vivian Noirie, a 36-year-old Spanish teacher at Largo High School, was charged with second-degree assault and physical child abuse after an altercation with a 17-year-old student who confronted her about a letter Noirie sent home about the student’s behavior, according to charging documents.

The incident started after the student stepped on Noirie’s foot and bumped into her, according to the documents. The student told police that she accidentally stepped on Noirie’s foot while following her around the classroom to force a conversation, the documents said.

Noirie became “enraged,” the student told police, and hit her several times with a closed fist in the back of the head before kicking her and throwing her to the ground, police said in charging documents.

In an interview, Denise Smith, a spokeswoman for the Prince George’s County state’s attorney’s office, said that the charges were dismissed but that the case remains under investigation.

Prince George’s County prosecutors and a paralegal for Noirie’s attorney declined to comment.

Noirie has been with Prince George’s County Public Schools since 2018 and was on paid administrative leave while her case was pending. A spokeswoman for the school district said Noirie would remain on leave because the investigation of the incident is ongoing.

Theresa Dudley, president of the county teachers union, said Noirie never should have been charged.

“You can look at the video and you can see that the student was clearly the aggressor and was much larger than she was,” Dudley said. “The bigger issue here is that the support that she needed as a new teacher was not there for her.”

Jennifer Jenkins contributed to this report.