Classified for credit

Valley of Fire State Park trail through vivid Aztec sandstone formations — covers sedimentary geology, desert ecology, and Nevada's ancient landscapes.

Patuxent River tidal wetland park — estuarine ecology, Chesapeake Bay watershed science, and wetland bird and plant identification.

Florida state preserve with bison, sandhill cranes, and diverse wetland ecosystems — supports ecology, wildlife biology, and field observation skills.

Federal wildlife refuge on the Outer Banks with migratory bird observation and interpretive trails — covers avian biology, coastal ecology, and barrier-island geography.

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

ND state park in a dramatic river gorge with forested trails and wildlife — covers Pembina Hills geology, boreal-transition forest ecology, and river systems.

Large Wisconsin state park on a Lake Michigan peninsula — covers Great Lakes ecology, glacial geology, and forest biology with ranger programs.

AZA-accredited zoo in Peoria with conservation programs covering animal biology, endangered species, and global habitat diversity.

Large Illinois state park at the Mississippi-Illinois River confluence — covers river ecology, bluff geology, migratory birds, and riparian biology.

Arkansas's first state park with waterfalls, canyon trails, and cedar forest — covers Ozark plateau geology and upland ecology.

Lake Michigan shoreline state park known for Petoskey stone (fossil coral) collecting — covers geology, paleontology, and Great Lakes ecology.

California state park on the Big Sur coast with redwood forest, river, and ocean access — supports ecology, geology, and coastal biology field study.

Sonoran Desert state park with a volcanic plug peak and Civil War battle site — covers desert ecology, geology, and Arizona territorial history.

State park centered on a prominent monadnock — supports geology, plant communities, and Piedmont geography through ranger programming and maintained trails.

Vermont working farm offering hands-on agricultural education — covers plant and animal husbandry, food systems, and sustainable farming practices.

West Virginia resort state park with gorge trails, aerial tramway, and access to New River ecology and Appalachian geography.

Deep gorge state park in the New River watershed — Appalachian geology, forest ecology, and watershed biology with ranger-led programming.

Large urban park in Tacoma containing zoo, aquarium, gardens, and old-growth forest — supports ecology, biology, and conservation study.

Accredited zoo and botanical garden with conservation programs covering zoology, plant biology, and Pacific Northwest ecosystems.

Protected coastal reserve with tide pools, kelp forests, and marine mammals — applied marine biology, ecology, and California coastal geography.

Maryland state park at the Chesapeake Bay tip with Civil War POW camp history, tidal ecology, and coastal geography study.

California state park with ocean beaches, wetlands, and mountains — supports coastal ecology, marine biology, and Southern California geography.

Dedicated penguin conservation facility at Detroit Zoo — seabird biology, cold-climate adaptations, and zoo conservation program study.

Idaho state park on a peninsula in Payette Lake with old-growth ponderosa pine forest — supports forest ecology, geology, and outdoor physical education.