I really recommend signing up for the email list on that site.
You will get an email as soon as a new class comes available.
They were filling up within minutes.
The training class info can be found here:
https://tvmdl.tamu.edu/testing-information/poultry/authorized-testing-agent-training-schedule/
https://tvmdl.tamu.edu/testing-information/poultry/
Effective September 1, 2017, TVMDL will no longer be able to provide field personnel to perform onsite...