SAN ANTONIO - A Northside Independent School District teacher was arrested for allegedly having an improper relationship with a 17-year-old girl, according to an arrest affidavit.

Chad Allen Rodriguez was booked into the Bexar County Adult Detention Center on Saturday on an improper relationship between an educator and a student charge, Bexar County jail records show.

On Sunday, an NISD spokesperson confirmed to KSAT that Rodriguez is a physics and astronomy teacher and a football and track coach at John Jay High School.