The Oakland County Sheriff's Department said Monday that Reanna Douglas of Auburn Hills was arraigned on third-degree criminal sexual conduct charges.
Sheriff's officials said the family of a 15-year-old at Lake Orion High School, north of Detroit, reported an inappropriate relationship.
Douglas had been contracted to coach the team. Her contract was terminated after the district learned of the allegations.
Douglas was given a $15,000 bond at her arraignment last week in Rochester Hills District Court.
Her attorney, John Freeman, said there are no allegations of force or coercion.