<P> The agency's Mental Health and Substance Abuse Division, along with Public Policy Research Institute at Texas A&M University coordinate the Texas School Survey, a program consisting of two surveys on drug and alcohol abuse, an annual one done at the local school - district level and a biennial statewide survey . The statewide survey, called the Texas School Survey of Substance Use, is the largest survey of its kind to be conducted in the United States and administered to over 100,000 public school students between grades 7 - 12 . </P> <P> Dr. John Hellerstedt is the Commissioner of the Texas Department of State Health Services . </P> <P> The agency provides an array of public health services and oversight across the state via 8 Regional offices . </P> <Ul> <Li> Region 1 - Lubbock </Li> <Li> REGION 2 / 3 - Arlington </Li> <Li> Region 4 / 5 North - Tyler </Li> <Li> Region 6 / 5 South - Houston </Li> <Li> Region 7 - Temple </Li> <Li> Region 8 - San Antonio </Li> <Li> Region 9 / 10 - El Paso </Li> <Li> Region 11 - Harlingen </Li> </Ul>

Who is serviced by the department of state health services