TexasCHLforum.com

That seems reasonable, but I would expect DPS to still require proof of certification as a pistol instructor, since that is a requirement. If you don't send in such proof, and they then request it, that will slow down your renewal for probably a month. I checked both boxes, but still sent my certification.

You still have to prove certification by one of these:
1. NRA
2. TCOLE
3. Some other authority/training school