At first, Lewis thought the administrator made a mistake, thinking she was a student. But when she explained she was a parent, she said the official was not allowing her on school property.
"She went on to say that she still couldn't let me on the premises because I was not in dress code and I still didn't understand what that meant. She said that my headscarf was out of dress code and my dress was too short," Lewis told the television station.
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Lewis said she wore the scarf because she was getting her hair done, and wanted it up. She also said her dress was longer than the finger-length test, meaning it was not shorter than her fingers when her arms were at her sides.
Lewis also asked the administrator to see the parent dress code.
"I wanted to see proof of where it says parents can come dressed a certain way, but it wouldn't show me that. I wouldn't leave, so they called the police department. They called them on me and I guess he was coming to tell me to leave, but I was already on the phone with the school board," Lewis told KPRC.
Madison High School does have a list of parent responsibilities, but it does not address how a parent should be dressed, according to KPRC.
KRPC reached out to officials at Houston Independent School District, but they haven't responded as of Friday morning.