| Andover High School |
| Arlington Open Space Committee |
| Arlington Public Schools |
| Arnold Arboretum of Harvard University |
| Boston Arts Acadmey |
| Brandeis University |
| Carlisle Conservation Foundation |
| Cooperative Nature School |
| Coyle and Cassidy High School |
| Earthwatch Institute |
| Earthwise Aware |
| Emerald Necklace Conservancy |
| Encyclopedia of Life |
| Franklin Park Zoo |
| Friends of Menotomy Rocks Park |
| Friends of the Malden River |
| Fuller Middle School |
| Girl Scouts of Eastern MA |
| Green Cambridge |
| Groundwork Lawrence |
| Hale Reservation |
| King Elementary School |
| Lexington Conservation Division |
| Lexington High School |
| Lincoln-Sudbury High School |
| Mary M. B. Wakefield Charitable Trust |
|
Mass Audubon
Blue Hills Reservation
Boston Nature Center and Wildlife Sanctuary
Drumlin Farm
Habitat Education Center and Wildlife Sanctuary
Ipswich River Wildlife Sanctuary
Joppa Flats Education Center
Moose Hill Wildlife Sanctuary
Museum of American Bird Art
North River Wildlife Sanctuary
Stony Brook Wildlife Sanctuary
|
| Mass Bays National Estuary Program |
| Massachusetts Department of Conservation and Recreation |
| Medford High School |
| Meridian Academy |
| Middleborough High School |
| MIT Sea Grant |
| MIT Senseable Lab |
| Mount Auburn Cemetery |
| Museum of Science, Boston |
| Mystic River Watershed Association |
| National Park Service |
| New England Aquarium Live Blue Service Corps |
| New England Ocean Science Education Collaborative |
| North Shore Nature Programs |
| One Square World |
| Parker River Clean Water Association |
| Project Green Schools |
| Quincy Public Schools |
| Somerville Conservation Commission |
| Speak for the Trees |
| St. John Paul Catholic Academy |
| Stellwagen Bank National Marine Sanctuary |
| Stone Zoo |
| Stonehill College |
| Stow Conservation Trust |
| Suffolk University |
| Swampscott Conservancy |
| The Nature Conservancy |
| Thompson Island Outward Bound Education Center |
| U.S. Environmental Protection Agency, Region 1 |
| U.S. Fish & Wildlife Service |
| University of Massachusetts Boston |
| Wakefield Estate |
| Wellesley College |
| Wellesley Conservation Council |
| Wellesley Natural Resources Commission |
| Westwood High School |
| Wright Farm |
| Zoo New England |
