Child Support Services

Acknowledgment of Paternity (AOP)
Certification Training

Begin Certification Training (PDF)
AOP Frequently Asked Questions
Ordering Forms, Etc.

The Texas Administrative Code , Subchapter J, establishes that individuals and/or entities (offices, hospitals, etc.) who process the Acknowledgment of Paternity (AOP) form are required to be certified by the Office of the Attorney General. No one may process the AOP without being certified because once filed with the Texas Vital Statistics Unit (VSU), the AOP creates a legal finding of paternity that can affect the child and parents for the rest of their lives. Certification must be renewed annually.

Instructions for Completing This Training


The Acknowledgment of Paternity (AOP) process is addressed in both State and Federal law. The training will reference these laws. For your convenience, you also may view and print these documents at any time, before or after the training, using the following links and your own resources.

Click to download Acrobat Reader NOTE: To view and print PDF format files, you must have Adobe Acrobat Reader on your computer. You may use the icon at the right to download this free accessory, if you need it.

Ordering AOP Material and Forms

The following links connect you to printable PDF and word processor files for order forms and instructions, and other helpful free AOP documents.

Requisitions for Forms and AOP material:

Other printable (PDF format) AOP material:


For questions regarding the Acknowledgment of Paternity certification process, please contact our AOP Hotline at (866) 255-2006 or send an email to

You may also find a Paternity Outreach Coordinator in your area.