TAMPA, FL – February 26, 2026 – The Hillsborough County Sheriff’s Office (HCSO) has arrested Gregory Sinadinos II, a 33-year-old teacher at Leto High School, following an investigation into inappropriate conduct with a student.
On February 24, 2026, an HCSO School Resource Deputy at Leto High School was notified of an incident involving a teacher having inappropriate communication with a student. Detectives from the Special Victims Section were notified and responded to the school.
Through the investigation, detectives determined that on the same day, Sinadinos kissed a 17-year-old student. Additionally, Sinadinos displayed an obscene photo of himself and challenged the student to do the same.
Sinadinos has been employed at Leto High School for two years.

Sheriff Chad Chronister stated: “Parents trust that when they send their children to school, they are entering a safe environment focused on learning and growth. There is absolutely no excuse for an adult in a position of authority to engage in inappropriate conduct with a student. This arrest sends a clear message: anyone who exploits or attempts to exploit a child will be held accountable.”
Sinadinos was arrested and is facing charges of:
- One count of Battery
- One count of Authority Figure Soliciting Lewd Conduct with a Student
- One count of Selling or Distributing Obscene Material to a Minor
This is an active investigation. Nothing further at this time.
