Classified for credit

Nature center at Clifty Falls State Park — Indiana geology, waterfall formation, and forest ecology with ranger-led programming.

Large WMA in southwestern VA offering wildlife observation, habitat study, and ecology fieldwork across forested ridges and streams.

City park on West Grand Traverse Bay with a small zoo and beach — Great Lakes shoreline ecology and freshwater biology.

Community nature center with trails and interpretive exhibits — covers Mississippi wildlife, local plant ecology, and basic environmental science.

State recreation area on Clinton Lake — aquatic ecology, Illinois wetland habitats, and outdoor recreation; ranger programs available seasonally.

Kansas state park on Clinton Lake with trails, wildlife, and water recreation — aquatic ecology, Great Plains geography, and outdoor recreation.

Small municipal nature center with trails and native habitat — supports ecology, local wildlife identification, and outdoor education.

New Hampshire state park on Hopkinton Lake with forested trails — covers freshwater ecology, native flora, and outdoor recreation.

Municipal botanical garden with themed plant collections in California's Central Valley — covers plant biology, horticulture, and regional native flora.

Eastern Oregon state recreation site along the John Day River — high-desert riparian ecology, wildlife habitat, and outdoor recreation.

Self-guided trail through lignite coal veins and burned clay formations in Theodore Roosevelt NP — geology, combustion chemistry, and badlands ecology.

Botanical garden on a historic bamboo research farm — covers plant biology, horticulture, and ethnobotany across diverse living collections.

Gateway visitor center for multiple coastal NC wildlife refuges — covers migratory bird ecology, coastal wetland habitats, and conservation biology.

Mid-coast Maine nature center on the Damariscotta River — estuarine ecology and saltwater naturalist programs.

Maine coastal state park with extreme tidal variation on Cobscook Bay — supports marine biology, tidal ecology, and coastal geography.

Massachusetts state park with lake swimming, trails, and wildlife habitat supporting ecology, water-cycle, and physical education study.

Chattahoochee Hills park with creek, historic mill ruins, and forest trails — supports watershed ecology, geology, and field biology study.

Connecticut's largest state forest with mixed hardwood trails — supports forest ecology, native species identification, and outdoor physical education.

Reservoir state park in south-central Pennsylvania with diverse habitats — supports ecology, freshwater biology, and outdoor skills curriculum.

Paved lakeside parkway along Lake Coeur d'Alene — lake ecology, Pacific Northwest geography, and outdoor recreation in a scenic corridor.

Small free NJ city zoo — animal observation for young children.

LSU-affiliated arboretum with labeled tree and shrub collections — supports dendrology, plant taxonomy, and Southern botanical study.

National wildlife refuge protecting wetlands and sage-steppe habitat — migratory bird biology, wetland ecology, and federal conservation land management.

Federally managed wildlife refuge in the Columbia Basin — migratory waterfowl biology, high-desert riparian ecology, and habitat conservation.