NEW BRUNSWICK – Students at the high school have expressed concerns after a 29-year-old woman has been charged by police with posing as a student for four days last week.

Hyejeong Shin, a 29-year-old city woman, has been charged with one count of providing a false government document with the intent to verify one’s identity or age, said Deputy Director J.T. Miller of the New Brunswick Police Department on Wednesday.

According to police, Shin used the false document − a birth certificate − to enroll in New Brunswick High School as a student, claiming she was a teenager. She provided the district with the fake document.

This charge is a third-degree offense, Miller said.

On Wednesday, as a result of an in-school fight and the fake document incident, social media showed several posts from students who said they were “concerned for their safety and well-being.” Some participated in an impromptu protest.

“Our voices in New Brunswick High School need to be heard,” said one post. “What has happened needs to be addressed. A lot of girls including me lifes (sic) were in danger. This school is being ignorant towards it. Something needs to change.”

“Where is the protection and the concern?” said another post.

In response to the students protest, video showed the main office was closed. Another post said the principal “looked” at the students “and walked away.”

In a statement on Wednesday, New Brunswick Public Schools Superintendent Aubrey Johnson confirmed that an adult woman posing as a student filed false documents and gained access to the high school the week of Jan. 16. He informed the Board of Education of this incident during Tuesday night’s Board of Education meeting.