A 30-year-old mother has been arrested after she posed as her 13-year-old daughter and spent almost the entire day at the child’s school.

The incident was reported in El Paso, Texas, in the San Elizario Independent School District.

According to the report, Casey Garcia dressed up in a yellow Marvel hoodie, a black disposable face mask, jeans, a backpack, and high-top sneakers. She then recorded herself walking through the halls of the school, talking to school staff members, and attending some of her daughter’s classes.

In the video, Garcia says she was able to make it through every single class undetected until the seventh period class where someone finally realized that she was not her daughter.

“The school was so concerned that my phone was out that they weren’t even paying attention to who I was,” she said.

Garcia said she did it as a social experiment to prove that schools are not safe.

“This is about our children and the safety of our children,” she said. “That’s all I’m trying to do is prevent another mass shooting.”

She is now facing charges of suspicion of criminal trespassing and tampering with government records.