Her older brother and two other students wore shirts with the slogan, "Real men aren't distracted by shoulders."
"My friends and I came up with the idea for the shirts. We thought it would be somewhat of a 'peaceful protest,'" her mum told Yahoo Lifestyle.
The students wore the shirts with no problems that day, but in Tuesday her parents met with school administrators, who investigate what happened.
The girl's father, Rob Darrow, told Yahoo Lifestyle that although the school's dress code is for written for both genders, he believes that it targets female students.
Both parents believe that the underlying message the school is teaching is that "we should tell women that they should behave in a way that doesn't disturb or distract men."
The parents said this is the wrong message to send boys and girls and hope to see the dress code changes.
"If someone is distracted because a female is showing her shoulders, someone needs to tell that boy, 'You need to be able to focus yourself and women are not objects,'" Rob tells Yahoo Lifestyle.