Classified for credit

Texas state park with limestone waterfall formations and Hill Country ecosystem — covers geology, hydrology, and native ecology.

Texas state park on Possum Kingdom Lake with trails and shoreline habitat — covers Texas ecology, limestone geology, and outdoor physical education.

Federally protected Wild & Scenic River corridor in Big Bend — riparian ecology, desert geology, and river geography in a remote backcountry setting.

San Antonio Botanical Garden with regional and international plant collections — supports plant biology, ecology, and conservation across diverse biome exhibits.

South Texas refuge at the confluence of two flyways — bird biodiversity, subtropical ecology, and wildlife conservation studies.

Botanical gardens and nature center in the Big Thicket region — covers Southeast Texas native plant biology, wetland ecology, and biodiversity conservation.

Texas state park on the South Llano River with exceptional bird habitat — supports riparian ecology, ornithology, and outdoor PE.

Working farm and petting zoo covering plant agriculture, animal husbandry, food systems, and seasonal crop cycles in a hands-on outdoor setting.

Private safari ranch with exotic and native animals — supports zoology, animal adaptation, and conservation awareness in a guided outdoor setting.

Working farm and wildlife petting zoo — covers domestic and exotic animal biology, animal husbandry, and farm ecology.

Drive-through exotic animal park in the Texas Hill Country — animal biology, global habitat geography, and conservation awareness.

Spring-fed San Marcos River center with glass-bottom boat tours and aquifer exhibits — covers freshwater ecology, Texas springs biology, and water-resource science.

Private big-cat sanctuary offering tours focused on exotic-animal conservation biology and captive-wildlife management.

Working Texas farm offering hands-on visits covering livestock care, plant agriculture, and rural food-production systems.

Hill Country outdoor discovery center with canyon, grotto, and spring ecosystem — covers karst geology, cave biology, and Edwards Plateau watershed ecology.

Children's edible garden exhibit within the Dallas Arboretum — covers plant biology, food production, and seasonal growing cycles.

Themed garden at the Dallas Arboretum celebrating women horticulturists — botany, landscape design history, and native/cultivated plant identification.

West Texas state park with historic buffalo soldiers site, native wildlife, and interpretive trails — covers Texas ecology, arid-land biology, and frontier history.

AZA-accredited municipal zoo featuring West Texas and African wildlife — covers animal biology, conservation programs, and ecosystem adaptation.

County nature center with trails and wildlife habitat — covers local ecology, native species identification, and outdoor biology.

All American Selections trial garden displaying evaluated new plant varieties — covers plant breeding, horticulture, and comparative botanical observation.

Botanical garden in the Texas Panhandle with themed gardens and a conservatory — covers plant taxonomy, regional ecology, and high-plains horticulture.

Municipal zoo with native and exotic species — supports zoology, animal behavior, and conservation education for younger students.

NPS recreation area at the confluence of the Rio Grande and Pecos River — covers desert ecology, riparian biology, geology, and US-Mexico border geography.