A 26-year old St. Augustine High School teacher was arrested late Wednesday afternoon after being accused of having sex with a student. The St. Johns County Sheriff’s Office said Virginia Houston Hinckley, who lives in Jacksonville, turned herself in Wednesday at the Nassau County Sheriff’s Office, after learning a warrant for her arrest was issued. Hinckley is charged with having unlawful sexual activity with a minor which is a second-degree felony. She was then released after posting $10,000 bond. Special Victims’ Unit detectives began the investigation Oct. 20 after allegations that Hinckley had sex with a 16-year-old male student who was in her class. Police interviewed witnesses and search warrants were obtained and used as evidence in the investigation. Detectives then turned the investigation over to the State Attorney’s Office, which issued the arrest warrant Wednesday afternoon. Hinckley was suspended with pay in October pending the outcome of the sheriff’s office and school investigation, according to the St. Johns County school district. According to the St. Augustine High School website, Hinckley teaches ninth-grade English and ninth- and tenth-grade intensive reading.