Two special education teacher's aids and one teacher were arrested on outstanding traffic-related warrants, according to HISD.
The district said HISD police arrested the employees on campus during the day, but that it was not in front of students.
According to the district, these employees are no longer on campus pending an internal employment investigation.
HISD said district police did not work with other law enforcement agencies on these arrests.
It's a case that Houston traffic ticket defense attorney Phillip Payter said he found strange.
"This scenario specifically is extremely odd," Payter said. "This has never happened as far as I've heard. Out of everything that I've seen, I have never seen anything of this sort. With it being a traffic violation and they're getting arrested for that, I find that extremely odd given that I deal with traffic cases all day, every day during the week."
ABC13 had some lingering questions about the case, including where the arrest warrants came from.
It could be the City of Houston's municipal courts, but ABC13 doesn't know because HISD would not give us the employees' names. The public information officer for the courts said he has never heard of a school district arrested employees at work for traffic violations.
The arrest warrants may have come from the Harris County Justice of the Peace Courts. Again, ABC13 doesn't know for sure.
But according to the courts' website, failure to take care of a citation before an appearance date or not showing up in court when it is required, could lead to a warrant for someone's arrest.
Payter said in his experience, a warrant for outstanding traffic tickets is typically not an offense people get arrested for, especially not while at work.
ABC13 is still waiting for HISD to answer additional questions about this case, including who issued the tickets and the warrant. We have reached out via email, phone, and in person, but have not yet heard back.