Kenneth John Fontenot, 51, was arrested at his home Friday morning as part of an investigation involving Homeland Security and the U.S. Attorney's Office.
Fontenot is a teacher at Clear Creek High School. The school district confirms he's been placed on leave.
Fontenot faces two counts of possession or promotion of child pornography.
A letter was sent to parents alerting them to the arrest. Additional counselors are being made available for students.