Kamryn Renfro shaved her head to support her friend, Delaney Clements, who is battling cancer.
"She's my best friend," Renfro told CNN. "It felt like the right thing to do."
"I have cancer called neuroblastoma and I've been getting a treatment called chemotherapy and it makes my hair fall out," Clements told CNN. "It made me feel very special and that I'm not alone." But the charter school she attends, Caprock Academy, said the haircut violates school dress code.
"The school she attends has asked her not to return to school until her hair grows back out, because in the family handbook it clearly states that students may not have shaved heads," Renfro's mother Jamie posted on Facebook Sunday.
"We do sign that we understand and agree to the rules every year...but honestly, I never thought my 9 year old daughter would do something so courageous, brave and selfless," Renfro's mother continued.
The Facebook post went viral -- making headlines from California to New York.
"Our number one priority was and is still, to get the policy revised at Caprock… and get Kamryn back into the classroom to help make her statement about childhood cancer awareness," Renfro's mother posted Monday.
Renfro was given permission to return to school and there was a special meeting Tuesday night to discuss the school policy."