INDIAN RIVER COUNTY — Mia Johnson, a 42-year-old former middle school athletic director, was sentenced Friday to 10 years in federal prison for transporting a minor across state lines with the intent to engage in criminal sexual activity.
Johnson also received 25 years of supervised release after she completes her prison term, the Indian River County Sheriff’s Office said in a statement.
The case began in 2024 when the sheriff’s office received a report of an inappropriate relationship between Johnson and a student. The victim told detectives the relationship had lasted about a year. School district officials removed Johnson from campus and terminated her employment as soon as the allegations came to light.
Detectives executed a search warrant at Johnson’s residence. She left Florida and traveled to Kansas City, Missouri. Investigators later determined that some of the criminal acts occurred in multiple states while Johnson traveled with the girls basketball team. The interstate nature of the case brought the FBI into the investigation.
Federal agents arrested Johnson in Kansas City on the charge of Transportation of a Minor with Intent to Engage in Criminal Sexual Activity under 18 U.S.C. § 2423(a).
Sheriff Eric Flowers said the sentencing holds Johnson accountable and reinforces the community’s commitment to child safety.
“Every child in Indian River County deserves to feel safe at school,” Flowers said. “Our detectives, working alongside the FBI, made sure this victim was heard and that Johnson was held accountable for her actions. We will never stop fighting to protect our kids.”
The sheriff’s office credited its detectives, the FBI and the School District of Indian River County for their cooperation throughout the investigation. Protecting children remains the agency’s highest priority.

