Officials say 34-year-old Emily Marie Anderson has been charged with sexual assault of a child which is a second-degree felony.
The charge stems from an ongoing investigation into a sexual relationship Anderson is believed to have had with a 15-year-old male victim.
At the time of the relationship, officials say Anderson was a teacher at Canyon High School and the victim was a student at the same high school.
Detectives are working to determine if there were any other victims. Anyone who believes that they may be a victim is asked to contact the New Braunfels Police Department at 830-221-4100.
Anderson was taken into custody without incident at NBPD Headquarters and transported to the Comal County Jail. Bond was set at $50,000 and she remains in custody at this time.