A former 51-year-old high school science teacher was found guilty by a Lake County jury on multiple charges against a foreign exchange student from Ital. Dmitri Kostyunin, 51, faced charges and was found guilty of Engaging in an Act that Constitutes Sexual Battery upon a Child 12 Years of Age or Older but Younger than 18 years of Age by a Person in Familial or Custodial Authority, Contributing to the Delinquency of a Minor, and Delivery of Cannabis to a Person Under the Age of 18 Years by a Person Over the Age of 18. Read: Fort Myers Man Gets Over 10 Years In Prison For Distributing And Posses…