Affiliate List
| District/School Name | City | State |
| Acton-Boxborough RSD | Acton | Massachusetts |
| Amesbury Public Schools | Amesbury | Massachusetts |
| Amherst-Pelham RSD | Amherst | Massachusetts |
| Andover Public Schools | Andover | Massachusetts |
| Arlington Public Schools | Arlington | Massachusetts |
| Attleboro Public Schools | Attleboro | Massachusetts |
| Barnstable Public Schools | Hyannis | Massachusetts |
| Barrington Public Schools | Barrington | Rhode Island |
| Belmont Public Schools | Belmont | Massachusetts |
| Berkley Public Schools | Berkley | Massachusetts |
| Berkshire Hills RSD | Stockbridge | Massachusetts |
| Berlin Public Schools | Berlin | Connecticut |
| Beverly Public Schools | Beverly | Massachusetts |
| Bi-County Collaborative | Franklin | Massachusetts |
| Billerica Public Schools | Billerica | Massachusetts |
| Blackstone Valley Reg Voc Tech SD | Upton | Massachusetts |
| Blackstone-Millville RSD | Blackstone | Massachusetts |
| Blue Hills Reg Tech School | Canton | Massachusetts |
| Bolton Public Schools | Bolton | Connecticut |
| Boston Public Schools | Boston | Massachusetts |
| Braintree Public Schools | Braintree | Massachusetts |
| Brewer Public Schools | Brewer | Maine |
| Bridgewater-Raynham RSD | Bridgewater | Massachusetts |
| Bristol Public Schools | Bristol | Connecticut |
| Bristol-Plymouth Reg Tech SD | Taunton | Massachusetts |
| Bristol-Warren RSD | Bristol | Rhode Island |
| Brockton Public Schools | Brockton | Massachusetts |
| Brooklyn Public Schools | Brooklyn | Connecticut |
| Burrillville Public Schools | Harrisville | Rhode Island |
| Cambridge Public Schools | Cambridge | Massachusetts |
| Canterbury Public Schools | Canterbury | Connecticut |
| Canton Public Schools | Canton | Connecticut |
| Canton Public Schools | Canton | Massachusetts |
| Carlisle Public Schools | Carlisle | Massachusetts |
| Central Falls School Department | Central Falls | Rhode Island |
| Cheshire Public Schools | Cheshire | Connecticut |
| Chittenden Central SU | Essex Junction | Vermont |
| Cohasset Public Schools | Cohasset | Massachusetts |
| Colchester Public Schools | Colchester | Connecticut |
| Concord-Carlisle RSD | Concord | Massachusetts |
| Coventry Public Schools | Coventry | Rhode Island |
| Cranston Public Schools | Cranston | Rhode Island |
| Cumberland Public Schools | Cumberland | Rhode Island |
| Dedham Public Schools | Dedham | Massachusetts |
| Dennis-Yarmouth RSD | South Yarmouth | Massachusetts |
| Dighton-Rehoboth RSD | North Dighton | Massachusetts |
| Douglas Public Schools | East Douglas | Massachusetts |
| Dracut Public Schools | Dracut | Massachusetts |
| Duxbury Public Schools | Duxbury | Massachusetts |
| East Bridgewater Public Schools | East Bridgewater | Massachusetts |
| East Granby Public Schools | East Granby | Connecticut |
| East Greenwich Public Schools | East Greenwich | Rhode Island |
| East Hampton Public Schools | East Hampton | Connecticut |
| East Haven Public Schools | East Haven | Connecticut |
| East Providence Public Schools | East Providence | Rhode Island |
| Easton Public Schools | North Easton | Massachusetts |
| Ellington Public Schools | Ellington | Connecticut |
| Essex Agricultural and Tech HS | Hathorne | Massachusetts |
| Exeter-West Greenwich RSD | West Greenwich | Rhode Island |
| Fairfield Public Schools | Fairfield | Connecticut |
| Farmington River RSD | Otis | Massachusetts |
| Fitchburg Public Schools | Fitchburg | Massachusetts |
| Foxborough Public Schools | Foxborough | Massachusetts |
| Foxborough Regional Charter School | Foxborough | Massachusetts |
| Framingham Public Schools | Framingham | Massachusetts |
| Franklin Public Schools | Franklin | Massachusetts |
| Freetown-Lakeville RSD | Lakeville | Massachusetts |
| Frontier RSD/SU #38 | South Deerfield | Massachusetts |
| Glastonbury Public Schools | Glastonbury | Connecticut |
| Grafton Public Schools | Grafton | Massachusetts |
| Granby Public Schools | Granby | Massachusetts |
| Greater New Bedford Reg Voc Tech | New Bedford | Massachusetts |
| Groton-Dunstable RSD | Groton | Massachusetts |
| Hamilton-Wenham RSD | Wenham | Massachusetts |
| Hampden-Wilbraham RSD | Wilbraham | Massachusetts |
| Harvard Graduate School of Education | Cambridge | Massachusetts |
| Harvard Public Schools | Harvard | Massachusetts |
| Hebron Public Schools | Hebron | Connecticut |
| Holbrook Public Schools | Holbrook | Massachusetts |
| Holyoke Public Schools | Holyoke | Massachusetts |
| Hopkinton Public Schools | Hopkinton | Massachusetts |
| Hudson Public Schools | Hudson | Massachusetts |
| Hull Public Schools | Hull | Massachusetts |
| Ipswich Public Schools | Ipswich | Massachusetts |
| Killingly Public Schools | Danielson | Connecticut |
| Lamoille South SU | Morrisville | Vermont |
| Lebanon Public Schools | Lebanon | Connecticut |
| Lee Public Schools | Lee | Massachusetts |
| Leicester Public Schools | Leicester | Massachusetts |
| Lenox Public Schools | Lenox | Massachusetts |
| Lincoln Public Schools | Lincoln | Massachusetts |
| Lincoln Public Schools | Lincoln | Rhode Island |
| Littleton Public Schools | Littleton | Massachusetts |
| Longmeadow Public Schools | Longmeadow | Massachusetts |
| Lowell Public Schools | Lowell | Massachusetts |
| Malden Public Schools | Malden | Massachusetts |
| Mansfield Public Schools | Mansfield | Massachusetts |
| Mansfield Public Schools | Storrs | Connecticut |
| Marblehead Public Schools | Marblehead | Massachusetts |
| Marlborough Public Schools | Marlborough | Massachusetts |
| Marlborough Public Schools | Marlborough | Connecticut |
| Marshfield Public Schools | Marshfield | Massachusetts |
| Martha's Vineyard RSD/SU #19 | Vineyard Haven | Massachusetts |
| Masconomet RSD | Topsfield | Massachusetts |
| Maynard Public Schools | Maynard | Massachusetts |
| Medfield Public Schools | Medfield | Massachusetts |
| Mendon-Upton RSD | Mendon | Massachusetts |
| Methuen Public Schools | Methuen | Massachusetts |
| Milford Public Schools | Milford | Massachusetts |
| Milford Public Schools | Milford | Connecticut |
| Millbury Public Schools | Millbury | Massachusetts |
| Millinocket School District | Millinocket | Maine |
| Millis Public Schools | Millis | Massachusetts |
| Milton Public Schools | Milton | Massachusetts |
| Milton Town School District | Milton | Vermont |
| Minuteman Science-Technology H.S. | Lexington | Massachusetts |
| Monarch School of New England | Rochester | New Hampshire |
| Monomoy RSD | Chatham | Massachusetts |
| Monroe Public Schools | Monroe | Connecticut |
| Montachusett Reg Voc Tech School | Fitchburg | Massachusetts |
| Montville Public Schools | Oakdale | Connecticut |
| Nantucket Public Schools | Nantucket | Massachusetts |
| Narragansett RSD | Baldwinville | Massachusetts |
| Narragansett School System | Narragansett | Rhode Island |
| Nashoba RSD | Bolton | Massachusetts |
| Natick Public Schools | Natick | Massachusetts |
| New Canaan Public Schools | New Canaan | Connecticut |
| New Fairfield Public Schools | New Fairfield | Connecticut |
| New Shoreham School District | Block Island | Rhode Island |
| Newburyport Public Schools | Newburyport | Massachusetts |
| Newington Public Schools | Newington | Connecticut |
| Newport Public Schools | Newport | Rhode Island |
| Newton Public Schools | Newtonville | Massachusetts |
| North Andover Public Schools | North Andover | Massachusetts |
| North Attleborough Public Schools | North Attleborough | Massachusetts |
| North Branford Public Schools | Northford | Connecticut |
| North Brookfield Public Schools | North Brookfield | Massachusetts |
| North Kingstown Public Schools | North Kingstown | Rhode Island |
| North Middlesex RSD | Pepperell | Massachusetts |
| North Reading Public Schools | North Reading | Massachusetts |
| North Smithfield Public Schools | Slatersville | Rhode Island |
| North Stonington Public Schools | North Stonington | Connecticut |
| Northampton Public Schools | Northampton | Massachusetts |
| Northborough Public Schools | Southborough | Massachusetts |
| Norwell Public Schools | Norwell | Massachusetts |
| Norwood Public Schools | Norwood | Massachusetts |
| Old Rochester RSD/SU #55 | Mattapoisett | Massachusetts |
| Orange East SU | Bradford | Vermont |
| Oxford Public Schools | Oxford | Massachusetts |
| Oxford Public Schools | Oxford | Connecticut |
| Palmer Public Schools | Palmer | Massachusetts |
| Pathfinder Reg Voc Tech School | Palmer | Massachusetts |
| Pawtucket Public Schools | Pawtucket | Rhode Island |
| Peabody Public Schools | Peabody | Massachusetts |
| Pinkerton Academy | Derry | New Hampshire |
| Pittsfield Public Schools | Pittsfield | Massachusetts |
| Plainfield Public Schools | Plainfield | Connecticut |
| Pomfret Public Schools | Pomfret Center | Connecticut |
| Portland Public Schools | Portland | Maine |
| Portsmouth Town School District | Portsmouth | Rhode Island |
| Providence Public Schools | Providence | Rhode Island |
| Putnam Public Schools | Putnam | Connecticut |
| Quabbin RSD | Barre | Massachusetts |
| Randolph Public Schools | Randolph | Massachusetts |
| Research for Better Teaching | Acton | Massachusetts |
| Rocky Hill Public Schools | Rocky Hill | Connecticut |
| Roosevelt International Academy | Providence | Rhode Island |
| RSD #01 | Falls Village | Connecticut |
| RSD #05 | Woodbridge | Connecticut |
| RSD #08 | Hebron | Connecticut |
| RSD #11 | Chaplin | Connecticut |
| RSD #13 | Durham | Connecticut |
| RSD #15 | Middlebury | Connecticut |
| RSD #18 | Old Lyme | Connecticut |
| RSU #13 | Rockland | Maine |
| RSU #44/SAD #44 | Bethel | Maine |
| RSU #51/SAD #51 | Cumberland | Maine |
| RSU #60/SAD #60 | North Berwick | Maine |
| Rutland Windsor SU | Ludlow | Vermont |
| Salem Public Schools | Salem | Connecticut |
| Sandwich Public Schools | East Sandwich | Massachusetts |
| SAU #01 | Peterborough | New Hampshire |
| SAU #04 | Bristol | New Hampshire |
| SAU #05 | Durham | New Hampshire |
| SAU #10 | Derry | New Hampshire |
| SAU #11 | Dover | New Hampshire |
| SAU #12 | Londonderry | New Hampshire |
| SAU #17 | Kingston | New Hampshire |
| SAU #25 | Bedford | New Hampshire |
| SAU #26 | Merrimack | New Hampshire |
| SAU #28 | Windham | New Hampshire |
| SAU #31 | Newmarket | New Hampshire |
| SAU #32 | Meriden | New Hampshire |
| SAU #37 | Manchester | New Hampshire |
| SAU #41 | Hollis | New Hampshire |
| SAU #42 | Nashua | New Hampshire |
| SAU #43 | Newport | New Hampshire |
| SAU #44 | Northwood | New Hampshire |
| SAU #47 | Jaffrey | New Hampshire |
| SAU #52 | Portsmouth | New Hampshire |
| SAU #55 | Plaistow | New Hampshire |
| SAU #56 | Somersworth | New Hampshire |
| SAU #63 | Wilton | New Hampshire |
| SAU #72 | Alton | New Hampshire |
| SAU #74 | Barrington | New Hampshire |
| SAU #75 | Grantham | New Hampshire |
| SAU #79 | Gilmanton | New Hampshire |
| SAU #84 | Littleton | New Hampshire |
| SAU #85 | Sunapee | New Hampshire |
| SAU #86 | Center Barnstead | New Hampshire |
| SAU #88 | Lebanon | New Hampshire |
| SAU #90 | Hampton | New Hampshire |
| Scarborough School Department | Scarborough | Maine |
| Scituate Public Schools | Scituate | Massachusetts |
| Scituate Town School District | North Scituate | Rhode Island |
| Seekonk Public Schools | Seekonk | Massachusetts |
| Shawsheen Valley Reg Voc Tech | Billerica | Massachusetts |
| Shrewsbury Public Schools | Shrewsbury | Massachusetts |
| Simsbury Public Schools | Simsbury | Connecticut |
| Smithfield Public Schools | Smithfield | Rhode Island |
| Somerville Public Schools | Somerville | Massachusetts |
| South Hadley Public Schools | South Hadley | Massachusetts |
| South Kingstown Public Schools | Wakefield | Rhode Island |
| South Windsor Public Schools | South Windsor | Connecticut |
| Southbridge Public Schools | Southbridge | Massachusetts |
| Southern Berkshire RSD | Sheffield | Massachusetts |
| Southington Public Schools | Southington | Connecticut |
| Spencer-East Brookfield RSD | Spencer | Massachusetts |
| Sprague Public Schools | Baltic | Connecticut |
| Springfield School District | Springfield | Vermont |
| St. Bridget School | Framingham | Massachusetts |
| Stafford Public Schools | Stafford Springs | Connecticut |
| Sudbury Public Schools | Sudbury | Massachusetts |
| Sutton Public Schools | Sutton | Massachusetts |
| Swampscott Public Schools | Swampscott | Massachusetts |
| Swansea Public Schools | Swansea | Massachusetts |
| Tewksbury Public Schools | Tewksbury | Massachusetts |
| Thompson Public Schools | North Grosvenordale | Connecticut |
| Tiverton Town School District | Tiverton | Rhode Island |
| Tolland Public Schools | Tolland | Connecticut |
| Tri-Town School Union | Boxford | Massachusetts |
| Truro Public Schools | Truro | Massachusetts |
| Upper Cape Cod Reg Tech | Bourne | Massachusetts |
| Wachusett RSD | Jefferson | Massachusetts |
| Wakefield Public Schools | Wakefield | Massachusetts |
| Wallingford Public Schools | Wallingford | Connecticut |
| Walpole Public Schools | Walpole | Massachusetts |
| Waltham Public Schools | Waltham | Massachusetts |
| Wareham Public Schools | Wareham | Massachusetts |
| Warwick Public Schools | Warwick | Rhode Island |
| Washington Central SU | Montpelier | Vermont |
| Waterford Public Schools | Waterford | Connecticut |
| Wayland Public Schools | Wayland | Massachusetts |
| Wells-Ogunquit Community School District | Wells | Maine |
| West Haven Public Schools | West Haven | Connecticut |
| West Warwick Public Schools | West Warwick | Rhode Island |
| Westbrook Public Schools | Westbrook | Connecticut |
| Westbrook School District | Westbrook | Maine |
| Westerly Public Schools | Westerly | Rhode Island |
| Weston Public Schools | Weston | Massachusetts |
| Weston Public Schools | Weston | Connecticut |
| Westport Public Schools | Westport | Connecticut |
| Weymouth Public Schools | Weymouth | Massachusetts |
| Wilmington Public Schools | Wilmington | Massachusetts |
| Winchester Public Schools | Winchester | Massachusetts |
| Windsor Public Schools | Windsor | Connecticut |
| Windsor Southeast SU | Windsor | Vermont |
| Windsor Southwest SU | Chester | Vermont |
| Woodbridge Public Schools | Woodbridge | Connecticut |
| Woodstock Academy | Woodstock | Connecticut |
| Woodstock Public Schools | Woodstock | Connecticut |
| Worcester Public Schools | Worcester | Massachusetts |
| Yarmouth School Department | Yarmouth | Maine |