Tavares High School student Mabry Anderson, 16, had been told by Principal Janice Boyd Tuesday her choice of hair color violated the school district's policy forbidding "unnatural" hair color and she could not return to campus until the problem was remedied, the Orlando (Fla.) Sentinel reported.
Mabry took her fight to social media website Facebook where her "Team Mabry" page received more than 800 "likes."
"I'm letting her fight her fight," said her mother, Cate Rettig, 50, of Tavares.
Anderson stayed home for two days, and then returned to school Friday, spending most of the day working on assignments rather than in the classroom.
Boyd relented Friday, saying Anderson could keep her red hair and return to her classes Tuesday after the Labor Day weekend.
School-district spokesman Chris Patton wouldn't comment on the reversal but said the policy will be reviewed at an upcoming school board workshop, the newspaper reported.