Mark Davis, who is listed on the school's website as a social studies and theology teacher, made an initial court appearance Wednesday morning.
According to the court appearance, Davis was apparently unhappy with a recommendation written for him by the principal for a coaching job at a different school.
Davis allegedly told another teacher that he had a gun in his classroom and was also going to bring a rifle to school.
Prosecutors say Davis also told that teacher that he felt Concordia's head baseball coach discriminated against him and did not give him the assistant baseball coach job.
Davis is facing both a felony and misdemeanor charge. He was given a $50,000 bond on the felony charge. The judge also ordered him to stay 1,000 feet away from the Concordia school, and suspended his concealed carry license.
Here is the #mugshot of Concordia Lutheran High School teacher Mark Davis, accused of bringing a gun to school & threatening administrators. #abc13 story: https://t.co/TvXZ3vdNpm pic.twitter.com/Lyhe4fPeLf— Miya Shay (@ABC13Miya) January 22, 2020
Davis was placed on administrative leave pending an internal investigation by Concordia Lutheran High School.
A statement was posted to the school's Facebook page:
There was an incident at our school yesterday involving an instructor, Mr. Davis, who was illegally in possession of a firearm in his classroom. Mr. Davis teaches U.S. History and World Geography. Texas law is clear on this issue and we take incidents like this very seriously.
As soon as this information was brought to our attention, we took immediate action. In addition to criminal charges, Mr. Davis has been placed on administrative leave pending an internal investigation. We are cooperating fully with law enforcement in all aspects of this matter. Due to federal and state law, the information we can share at this time is limited. We will provide further information as needed; however, we felt it was important to share what we could in order to manage and dispel rumor and speculation.
Please know the safety and security of our students, our teachers and staff, and our community remains at the forefront of everything we do at Concordia Lutheran High School.