The Hillsborough County Sheriff’s Office arrested a teacher from Leto High School for 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 with the Special Victims Section were notified and responded to the school.
Through investigative means, detectives learned that the same day, the teacher Gregory Sinadinos II, 33, kissed a 17-year-old student. In addition, Sinadinos displayed an obscene photo of himself and challenged the student to do the same.The teacher has been employed at Leto High School for two years.
“Parents trust that when they send their children to school, they are entering a safe environment focused on learning and growth,” said Sheriff Chad Chronister. “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.”
Gregory Sinadinos II was arrested and is facing one count of Battery, one count of Authority Figure Soliciting Lewd Conduct with a Student, and one count of Selling or Distributing Obscene Material to a Minor.
This is an active investigation; any update will come from the Public Affairs Office.