Classified for credit

NPS preserve protecting rare convergence of four North American ecosystems — field study in biodiversity, plant communities, and wetland ecology.

University art museum at UT Austin with a substantial permanent collection spanning antiquities through contemporary art — supports formal art history curriculum.

Ice cream factory tour showing dairy processing, pasteurization, and industrial food production from raw ingredients to packaged product.

Blue Bell ice cream factory tour showing commercial dairy processing, pasteurization, and food-production quality control.

World's largest known bat colony — seasonal guided tours cover mammal biology, echolocation, insect ecology, and cave conservation.

Coastal prairie state park with an active alligator population and ranger programs — wildlife ecology and wetland biology in a hands-on setting.

Drive-through wildlife safari with native and exotic species — zoology, animal behavior, and conservation of threatened species.

Bullock Texas State History Museum with extensive exhibits on Texas history from prehistory through modern era — Texas and US history with primary-source artifacts.

Working federal currency printing facility with guided tours — covers intaglio printing technology, anti-counterfeiting science, and monetary economics.

Full-dome digital planetarium inside the Houston Museum of Natural Science — covers astronomy, celestial mechanics, and space science through immersive programming.

American Airlines aviation museum with full-size aircraft — covers aeronautical engineering, the history of commercial flight, and aviation technology.

Texas state park on Caddo Lake, the only naturally formed lake in Texas — covers cypress swamp ecology, wetland biology, and Native American cultural history.

Mid-size accredited zoo with African, North American, and children's sections — zoology, conservation biology, and animal behavior across diverse species.

AZA-accredited zoo in Waco with strong conservation programming covering mammal, reptile, and bird species from multiple continents and Central Texas.

Drive-through safari park with exotic and native animals — covers zoology, animal behavior, and conservation of endangered species.

Texas Panhandle canyon park home to the official Texas State Bison Herd — covers geology, grassland ecology, and wildlife conservation.

Guided tour of a living cave system near Boerne — covers speleology, karst geology, cave formation, and cave-adapted biology.

Guided tour through a live cave system — covers speleology, karst geology, mineral formation, and underground ecosystems.

Commercially operated cave system with extensive speleothem formations — covers geology, mineralogy, and karst formation processes.

Accredited big-cat sanctuary offering tours focused on exotic animal behavior, wildlife conservation, and captive-care biology.

Living-history village in McKinney depicting 19th-century North Texas pioneer settlement, trades, and community life.

Indoor aquarium at Fair Park featuring freshwater and marine species with exhibits on aquatic biology and Texas ecosystems.

Hands-on children's discovery museum with interactive exhibits supporting early STEM, literacy, and problem-solving skills.

NPS visitor center for Big Bend's Chisos Basin — Chihuahuan Desert ecology, geology, and wildlife biology with ranger-led programming.