According to the State Constitution, Texas has 6 university systems and all but 1, the Texas State University System, has a flagship university:
- Texas A&M University System (Texas A&M University)
- Texas State University System (All instutions are considered equal)
- Texas Tech University System (Texas Tech University)
- University of Houston System (University of Houston)
- University of North Texas System (University of North Texas)
- University of Texas System (University of Texas at Austin)
"Tier 1" is a research designation given by multiple, unrelated, organisations (Carnegie Foundation,
U.S. News & World Report, etc.).
The Carnegie Foundation's "Tier 1" classification is based only on the amount of research dollars spent. Their highest designation for research universities is called: RU/VH: Research Universities (very high research activity). When the University of Houston is touting their "Tier One" status, this is what they're considering "Tier One." Right now in the state of Texas, only 4 universities have this classification:
- Rice University
- Texas A&M University
- University of Houston
- University of Texas at Austin
U.S. News & World Report's "National University" ranks the top 197 "Tier One" research universities individually, and the rest unranked simply as "Tier Two." 8 Universities in the state are USNWR are ranked as the "Tier One" universities.
- #17 Rice University
- #45 University of Texas at Austin
- #56 Southern Methodist University
- #63 Texas A&M University
- #79 Baylor University
- #99 Texas Christian University
- #143 University of Texas at Dallas
- #159 Texas Tech University
All this aside, the only one that really matter is membership in the Association of American Universities (AAU). The AAU, founded in 1901, is an invite-only organization made up of only the top research universities. Today, there are only 61 members, but there is not limit to the number of members, it's open to any university meeting the AAU's criteria, and a 2/3 vote of membership approval. Texas only has 3 AAU members and no matter what the Carnegie Foundation, USNWR, or the state of Texas says, these are the research powerhouse universities:
- University of Texas at Austin (1929-present)
- Rice University (1985-present)
- Texas A&M University (2001-present)
Bottom line: Texas has 5 flagship universities (TAMU, TTU, UH, UNT, UT Austin), 4 Carnegie Foundation "Tier One" universities (Rice, TAMU, UH, UT Austin), and 8 USNWR "Tier One" universities (Baylor, SMU, TAMU, TCU, TTU, UT Austin, UT Dallas).