Texas A & M University coordinates the
Texas Cooperative Extension 
Certified Food Manager Training Program 
Their web site provides information for
 Upcoming Courses and Course Descriptions.

http://foodsafety.tamu.edu/
 

There is a fee based on-line food certification course available, produced by the Texas Restaurant Association and accredited by the Texas Department of Health.  They offer the ServSafe course and test.  Anyone can take the course and the test is the same one you take when you attend a class.  The certificate is the same also.

http://www.servsafe.com/FoodSafety/solutions/options/online/