| American Outdoor School |
| Andover High School |
| Arnold Arboretum of Harvard University |
| Aster Montessori School |
| Athol Bird and Nature Club – Millers River Environmental Center |
| Berkshire Environmental Action Team (BEAT) |
| Big City Mountaineers |
| Blackstone River Valley National Heritage Corridor |
| Blue Hill Observatory and Science Center |
| Boston Outdoor Preschool Network |
| Bow Seat Ocean Awareness Programs |
| Brandeis University |
| Buttonwood Park Zoo |
| Cape Cod National Seashore |
| Capron Park Zoo |
| Central Massachusetts Regional Stormwater Coalition |
| Children’s House Montessori School |
| City of Cambridge |
| City of New Bedford Parks Recreation & Beaches |
| Cohasset Center for Student Coastal Research |
| Community Boating Center, Inc. |
| ConnectED Coast |
| Cooler Communities/ener-G-save |
| Cuvilly Arts & Earth Center |
| Dedham High School |
| Discovery Museum, Inc |
| Duxbury Bay Maritime School |
| Eagle Eye Institute |
| Environmental Management Project |
| Falmouth Outdoor Learning Project (committee of Rotary Club of Falmouth) |
| Falmouth Public Schools |
| Farrington Nature Linc |
| Friends of Holly Hill Farm |
| Gaining Ground |
| Great Falls Discovery Center |
| Greater New Bedford Regional Refuse Management District |
| Hale Education |
| Hands on Nature |
| Harvard Forest, Harvard University |
| Hilltown Cooperative Charter Public School |
| Hitchcock center for the Environment |
| Ipswich High School |
| Jackson Gillman |
| Keep Massachusetts Beautiful |
| Kestrel Educational Adventures |
| Linda Loring Nature Foundation |
| M-Power Adventure |
| MA Division of Fisheries & Wildlife (MassWildlife) |
| Ma’yan Tikvah |
| Mass Audubon |
| MASS Department of Conservation and Recreation |
| Massachusetts Envirothon |
| Massachusetts Farm to School |
| Mill City Grows |
| MIT Sea Grant |
| Mystic River Watershed Association |
| Nantucket Conservation Foundation |
| Nantucket Land Council |
| Nashua River Watershed Association |
| National Environmental Education Development Academy |
| Nature’s Classroom New England |
| New Bedford Whaling Museum |
| New England Botanic Garden |
| North and South Rivers Watershed Association |
| North Shore Nature Programs |
| NRT of Easton |
| OCEARCH |
| Parker River National Wildlife Refuge |
| Peapod Garden Education |
| Pentucket Regional High School |
| Piers Park Sailing Center |
| Pollard middle school, Needham |
| PUDDLESTOMPERS Nature Exploration |
| Ronald G Shapiro, PhD, LLC |
| Roots Rising |
| Salem Sound Coastwatch |
| School Sprouts Educational Gardens |
| Self-Reliance Corp |
| Shrewsbury High School |
| Soil and Water Conservation Society, Southern New England Chapter |
| Soule Homestead Education Center |
| South Shore Natural Science Center |
| Southcoast Food Policy Council |
| Southwick Regional School |
| Speak for the Trees Boston |
| Stone Living Lab |
| Sustainable Marblehead |
| Tamarack Hollow Nature and Cultural Center |
| The Bement School |
| The Joys of Nature |
| The Maria Mitchell Association |
| The Nature Connection |
| The Trustees of Reservations |
| Turners Falls High School |
| Waquoit Bay National Estuarine Research Reserve |
| Wareham Land Trust |
| Wellesley Natural Resources Commission |
| Westport River Watershed Alliance |
| Whale & Dolphin Conservation |
| Wright Locke Farm Conservancy |
| Zoo New England |
