It is back to class for students in the Ringgold School District. Extra security is in place after the district cancelled classes both Friday and again on Monday after safety concerns arose involving alleged threats against the Middle School. The district conducted so-called ‘flexible instruction’ days. District officials say the Washington County District Attorney’s office is now assisting Ringgold Police in their investigation. According to reports, six students have been questioned in connection with the threats. No other details are currently being released.