SOUTH FORSYTH – A former math teacher from Lambert High School was recently arrested for having a relationship with a 17-year-old female student. John David Ubriaco, a 33-year-old from Dawson County, was charged on Feb. 24 with two counts of felony sexual assault, according to Deputy Doug Rainwater, a spokesman for the Forsyth County Sheriff’s Office. Ubriaco, who goes by his middle name, had resigned from his position at the school on Nichols Road on Tuesday, Feb. 21, according to Jennifer Caracciolo, spokeswoman for the school system.“He had worked at Lambert since August 2016 and did not teach prior in other Forsyth County schools,” she said. Caracciolo said the district is unable to comment further “since this is a personnel issue and a criminal investigation.” The sheriff’s office’s school resource officer unit and major crimes unit investigated the incident. Ubriaco is being held at the Forsyth County Jail without bond.