Stacie Calder, mother of Madison Calder, cautioned the board of the possibility of a lawsuit in the future. She said the American Civil Liberties Union has been contacted.
"There will be lawsuits and injunctions," she said. "We're willing to take this all the way."
District Superintendent William Harner said he hopes the boys will remain supporters of the girls' varsity team.
According to Harner, the boys may participate in the junior varsity girls' field hockey team.