| School Name | City | State | Grades | Gender | Boarding | School Size |
| Academy of the New Church | Bryn Athyn | PA | 9-12 | Co-Ed | Y | 200 |
| American Boychoir School | Princeton | NJ | 4-8 | All-Boys | Y | 32 |
| Andrews Osborne Academy | Willoughby | OH | PK-12 | Co-Ed | Y | 340 |
| Annie Wright School | Tacoma | WA | PK-12 | Co-Ed | Y | 454 |
| Army & Navy Academy | Carlsbad | CA | 7-12 | All-Boys | Y | 300 |
| Asheville School | Asheville | NC | 9-12 | Co-Ed | Y | 285 |
| The Athenian School | Danville | CA | 6-12 | Co-Ed | Y | 478 |
| Avon Old Farms School | Avon | CT | 9-PG | All-Boys | Y | 405 |
| Baylor School | Chattanooga | TN | 6-12 | Co-Ed | Y | 1040 |
| Beaver Country Day School | Chestnut Hill | MA | 6-12 | Co-Ed | Y | 464 |
| Belmont Hill School | Belmont | MA | 7-12 | All-Boys | Y | 440 |
| Bement School | Deerfield | MA | K-9 | Co-Ed | Y | 206 |
| Berkshire School | Sheffield | MA | 9-12 | Co-Ed | Y | 399 |
| Besant Hill School of Happy Valley | Ojai | CA | 9-12 | Co-Ed | Y | 520 |
| Blair Academy | Blairstown | NJ | 9-12 | Co-Ed | Y | 460 |
| Bolles School | Jacksonville | FL | PK-12 | Co-Ed | Y | 1622 |
| Brewster Academy | Wolfeboro | NH | 9-12 | Co-Ed | Y | 360 |
| Brooks School | North Andover | MA | 9-12 | Co-Ed | Y | 370 |
| Buffalo Seminary | Buffalo | NY | 9-12 | All-Girls | Y | 212 |
| Buxton School | Williamstown | MA | 9-12 | Co-Ed | Y | 90 |
| C.F.S. - The School at Church Farm | Exton | PA | 7-12 | All-Boys | Y | 185 |
| The Cambridge School of Weston | Weston | MA | 9-PG | Co-Ed | Y | 335 |
| Canterbury School | New Milford | CT | 9-PG | Co-Ed | Y | 320 |
| Canyonville Christian Academy | Canyonville | OR | 9-12 | Co-Ed | Y | 148 |
| Cardigan Mountain School | Canaan | NH | 6-9 | All-Boys | Y | 214 |
| Cate School | Carpinteria | CA | 9-12 | Co-Ed | Y | 270 |
| Chaminade College Preparatory School | St. Louis | MO | 6-12 | All-Boys | Y | 830 |
| Chapel Hill-Chauncy Hall School | Waltham | MA | 9-PG | Co-Ed | Y | 180 |
| Cheshire Academy | Cheshire | CT | 6-PG | Co-Ed | Y | 437 |
| Choate Rosemary Hall Top 25 | Wallingford | CT | 9-12 | Co-Ed | Y | 865 |
| Christ School | Arden | NC | 8-12 | All-Boys | Y | 290 |
| Colorado Rocky Mountain School | Carbondale | CO | 9-12 | Co-Ed | Y | 176 |
| Colorado Timberline Academy | Durango | CO | 9-PG | Co-Ed | Y | 45 |
| Concord Academy | Concord | MA | 9-12 | Co-Ed | Y | 382 |
| Cranbrook Schools | Bloomfield Hills | MI | PK-12 | Co-Ed | Y | 1659 |
| The Culver Academies | Culver | IN | 9-12 | Co-Ed | Y | 811 |
| Cushing Academy | Ashburnham | MA | 9-PG | Co-Ed | Y | 400 |
| Dana Hall School | Wellesley | MA | 6-12 | All-Girls | Y | 484 |
| Darrow School | New Lebanon | NY | 9-12 | Co-Ed | Y | 107 |
| The Deck House School | Edgecomb | ME | 9-12 | All-Boys | Y | 12 |
| Deerfield Academy Top 25 | Deerfield | MA | 9-PG | Co-Ed | Y | 650 |
| Dublin School | Dublin | NH | 9-12 | Co-Ed | Y | 150 |
| Dunn School | Los Olivos | CA | 6-12 | Co-Ed | Y | 162 |
| Eaglebrook School | Deerfield | MA | 6-9 | All-Boys | Y | 248 |
| Emma Willard School | Troy | NY | 9-PG | All-Girls | Y | 358 |
| The Ethel Walker School | Simsbury | CT | 6 to 12 | All-Girls | Y | 253 |
| Fessenden School | West Newton | MA | K-9 | All-Boys | Y | 526 |
| Flintridge Sacred Heart Academy | La Canada Flintridge | CA | 9-12 | All-Girls | Y | 413 |
| Florida Prep Academy | Melbourne | FL | 6-12 | Co-Ed | Y | 350 |
| The Forman School | Litchfield | CT | 9-PG | Co-Ed | Y | 210 |
| Fountain Valley School of Colorado | Colorado Springs | CO | 9-12 | Co-Ed | Y | 235 |
| Foxcroft School | Middleburg | VA | 9-12 | All-Girls | Y | 151 |
| Fryeburg Academy | Fryeburg | ME | 9-PG | Co-Ed | Y | 579 |
| Garrison Forest School | Owing Mills | MD | PK–12 | All-Girls | Y | 6823 |
| George School | Newtown | PA | 9-12 | Co-Ed | Y | 541 |
| George Stevens Academy | Blue Hill | ME | 9-12 | Co-Ed | Y | 319 |
| Georgetown Preparatory School | North Bethesda | MD | 9-12 | All-Boys | Y | 491 |
| Gilmour Academy | Gates Mills | OH | K-12 | Co-Ed | Y | 650 |
| The Glenholme School | Washington | CT | 5-12 | Co-Ed | Y | 105 |
| Gould Academy | Bethel | ME | 9-12 | Co-Ed | Y | 250 |
| The Governor's Academy | Byfield | MA | 9-12 | Co-Ed | Y | 400 |
| Grier School | Tyrone | PA | 7-12 | All-Girls | Y | 315 |
| Groton School Top 25 | Groton | MA | 8-12 | Co-Ed | Y | 380 |
| The Gunnery | Washington | CT | 9-PG | Co-Ed | Y | 298 |
| Hackley School | Tarrytown | NY | K-12 | Co-Ed | Y | 844 |
| Hebron Academy | Hebron | ME | 6-PG | Co-Ed | Y | 257 |
| High Mowing School | Wilton | NH | 9-12 | Co-Ed | Y | 120 |
| The Hill School | Pottstown | PA | 9-PG | Co-Ed | Y | 520 |
| Hillside School | Marlborough | MA | 5-9 | All-Boys | Y | 145 |
| Holderness School | Plymouth | NH | 9-12 | Co-Ed | Y | 280 |
| Hoosac School | Hoosick | NY | 8-PG | Co-Ed | Y | 125 |
| Hotchkiss School Top 25 | Lakeville | CT | 9-PG | Co-Ed | Y | 627 |
| Houghton Academy | Houghton | NY | 6-PG | Co-Ed | Y | 126 |
| The Hun School | Princeton | NJ | 6-PG | Co-Ed | Y | 644 |
| Hyde School | Woodstock | CT | 9-PG | Co-Ed | Y | 140 |
| Hyde School | Bath | ME | 9-PG | Co-Ed | Y | 138 |
| Idyllwild Arts Academy | Idyllwild | CA | 9-PG | Co-Ed | Y | 300 |
| Indian Mountain School | Lakeville | CT | PK-9 | Co-Ed | Y | 260 |
| Indian Springs School | Pelham | AL | 8-12 | Co-Ed | Y | 309 |
| Interlochen Arts Academy | Interlochen | MI | 9-12 | Co-Ed | Y | 475 |
| Kent School | Kent | CT | 9-12 | Co-Ed | Y | 570 |
| Kents Hill School | Kents Hill | ME | 9-PG | Co-Ed | Y | 225 |
| Kimball Union Academy | Meriden | NH | 9-PG | Co-Ed | Y | 339 |
| The Kiski School | Saltsburg | PA | 9-PG | All-Boys | Y | 206 |
| The Knox School | St. James | NY | 6-PG | Co-Ed | Y | 200 |
| Lake Forest Academy | Lake Forest | IL | 9-12 | Co-Ed | Y | 430 |
| Landmark School | Manchester | MA | 2-12 | Co-Ed | Y | 472 |
| Lawrenceville School Top 25 | Lawrenceville | NJ | 9-PG | Co-Ed | Y | 822 |
| The Leelanau School | Glen Arbor | MI | 9-12 | Co-Ed | Y | 50 |
| Lexington Christian Academy | Lexington | MA | 6-12 | Co-Ed | Y | 305 |
| Linden Hall | Lititz | PA | 6-12 | All-Girls | Y | 195 |
| Loomis Chaffee School | Windsor | CT | 9-PG | Co-Ed | Y | 675 |
| Lyndon Institute | Lyndon Center | VT | 9-12 | Co-Ed | Y | 585 |
| MacDuffie School | Springfield | MA | 6-12 | Co-Ed | Y | 190 |
| Maine Central Institute | Pittsfield | ME | 9-PG | Co-Ed | Y | 450 |
| Maine School of Science & Mathematics | Limestone | ME | 9-12 | Co-Ed | Y | 140 |
| Marianapolis Preparatory School | Thompson | CT | 9-PG | Co-Ed | Y | 400 |
| Marvelwood School | Kent | CT | 9-PG | Co-Ed | Y | 172 |
| The Masters School | Dobbs Ferry | NY | 5-12 | Co-Ed | Y | 650 |
| McCallie School | Chattanooga | TN | 6-12 | All-Boys | Y | 932 |
| McDonogh School | Owing Mills | MD | K-12 | Co-Ed | Y | 1350 |
| Mercersburg Academy | Mercersburg | PA | 9-12 | Co-Ed | Y | 441 |
| Middlesex School Top 25 | Concord | MA | 9-12 | Co-Ed | Y | 395 |
| Midland School | Los Olivos | CA | 9-12 | Co-Ed | Y | 85 |
| Millbrook School | Millbrook | NY | 9-12 | Co-Ed | Y | 310 |
| Milton Academy Top 25 | Milton | MA | K-12 | Co-Ed | Y | 1015 |
| Milton Hershey School | Hershey | PA | PK-12 | Co-Ed | Y | 1838 |
| Miss Hall's School | Pittsfield | MA | 9-12 | All-Girls | Y | 180 |
| Miss Porter's School | Farmington | CT | 9 to 12 | All-Girls | Y | 325 |
| Monte Vista Christian School | Watsonville | CA | 6-12 | Co-Ed | Y | 802 |
| Montverde Academy | Montverde | FL | PK3 - PG | Co-Ed | Y | 1189 |
| New Hampton School | New Hampton | NH | 9-PG | Co-Ed | Y | 325 |
| Noble and Greenough School Top 25 | Dedham | MA | 7-12 | Co-Ed | Y | 613 |
| The North Broward Preparatory Schools | Coconut Creek | FL | PK3-12 | Co-Ed | Y | 1375 |
| North Country School | Lake Placid | NY | 4-9 | Co-Ed | Y | 89 |
| Northfield Mount Hermon School | Mount Hermon | MA | 9-PG | Co-Ed | Y | 650 |
| Northwood School | Lake Placid | NY | 9-PG | Co-Ed | Y | 175 |
| Oak Grove School | Ojai | CA | PK-12 | Co-Ed | Y | 230 |
| Oakwood Friends School | Poughkeepsie | NY | 6-12 | Co-Ed | Y | 173 |
| Ojai Valley School | Ojai | CA | PK-12 | Co-Ed | Y | 287 |
| Oldfields School | Glencoe | MD | 6-12 | All-Girls | Y | 180 |
| Olney Friends School | Barnesville | OH | 9-12 | Co-Ed | Y | 55 |
| Oregon Episcopal School | Portland | OR | PK-12 | Co-Ed | Y | 850 |
| The Orme School | Mayer | AZ | K-PG | Co-Ed | Y | 187 |
| Oxford Academy | Westbrook | CT | 9-PG | All-Boys | Y | 48 |
| The Peddie School | Hightstown | NJ | 9-PG | Co-Ed | Y | 564 |
| The Pennington School | Pennington | NJ | 6-12 | Co-Ed | Y | 510 |
| Perkiomen School | Pennsburg | PA | 6-PG | Co-Ed | Y | 351 |
| Phillips Academy Top 25 | Andover | MA | 9-PG | Co-Ed | Y | 1150 |
| Phillips Exeter Academy Top 25 | Exeter | NH | 9–12, PG | Co-Ed | Y | 1060 |
| Pomfret School | Pomfret | CT | 9-PG | Co-Ed | Y | 350 |
| Portsmouth Abbey School | Portsmouth | RI | 9-12 | Co-Ed | Y | 360 |
| Proctor Academy | Andover | NH | 9-12 | Co-Ed | Y | 360 |
| Purnell School | Pottersville | NJ | 9-12 | All-Girls | Y | 70 |
| Putney School | Putney | VT | 9-12 | Co-Ed | Y | 238 |
| Rabun Gap-Nacoochee School | Rabun Gap | GA | 6-12 | Co-Ed | Y | 460 |
| Rancho Solano Preparatory School | Glendale | AZ | PS-12 | Co-Ed | Y | 55 |
| Rectory School | Pomfret | CT | K-9 | Co-Ed | Y | 250 |
| Robert Treat Academy Charter School | Newark | NJ | K-8 | Co-Ed | Y | 525 |
| Ross School | East Hampton | NY | K-12 | Co-Ed | Y | 520 |
| Rumsey Hall School | Washington Depot | CT | K-9 | Co-Ed | Y | 335 |
| Saint Andrew's School | Boca Raton | FL | JK-12 | Co-Ed | Y | 1300 |
| Saint Bernard Preparatory School, Inc. | Cullman | AL | 7-12 | Co-Ed | Y | 155 |
| Saint James School | St. James | MD | 8-12 | Co-Ed | Y | 233 |
| Saint Mary's School | Raleigh | NC | 9-12 | All-Girls | Y | 270 |
| Saint Thomas More School | Oakdale | CT | 7-PG | All-Boys | Y | 140 |
| Salem Academy | Winston-Salem | NC | 9-12 | All-Girls | Y | 200 |
| Salisbury School | Salisbury | CT | 9 to 12 | All-Boys | Y | 310 |
| San Domenico School | San Anselmo | CA | PK-12 | Co-Ed | Y | 640 |
| Sandy Spring Friends School | Sandy Spring | MD | PK-12 | Co-Ed | Y | 570 |
| Santa Catalina School | Monterey | CA | PK–12 | All-Girls | Y | 233 |
| Shattuck-St. Mary's School | Faribault | MN | 6-PG | Co-Ed | Y | 438 |
| Solebury School | New Hope | PA | 7-12 | Co-Ed | Y | 235 |
| South Kent School | South Kent | CT | 9-PG | All-Boys | Y | 180 |
| Southwestern Academy | San Marino | CA | 6-PG | Co-Ed | Y | 144 |
| Sparhawk School | Amesbury | MA | PK-12 | Co-Ed | Y | |
| St. Albans School | Washington | DC | 4-12 | 570 | ||
| St. Andrew's School | Barrington | RI | 3-12 | Co-Ed | Y | 212 |
| St. Andrew's School | Middletown | DE | 9-12 | Co-Ed | Y | 310 |
| St. Andrew's-Sewanee School | Sewanee | TN | 6-12 | Co-Ed | Y | 247 |
| St. George's School | Middletown | RI | 9-12 | Co-Ed | Y | 371 |
| St. John's Preparatory School | Danvers | MA | 9-12 | All-Boys | Y | 1500 |
| St. Johnsbury Academy | St. Johnsbury | VT | 9-12 | Co-Ed | Y | 930 |
| St. Mark's School Top 25 | Southborough | MA | 9-12 | Co-Ed | Y | 364 |
| St. Paul's School Top 25 | Concord | NH | 9-12 | Co-Ed | Y | 531 |
| St. Stephen's Episcopal School | Austin | TX | 6-12 | Y | 686 | |
| St. Thomas Choir School | New York | NY | 3-8 | All-Boys | Y | 41 |
| St. Timothy's School | Stevenson | MD | 9-12 | All-Girls | Y | 200 |
| Stevenson School | Pebble Beach | CA | PK-12 | Co-Ed | Y | 750 |
| Stoneleigh-Burnham School | Greenfield | MA | 7-PG | All-Girls | Y | 155 |
| The Stony Brook School | Stony Brook | NY | 7-12 | Co-Ed | Y | 370 |
| Stuart Hall | Staunton | VA | PK-12 | Co-Ed | Y | 300 |
| Suffield Academy | Suffield | CT | 9-12 | Co-Ed | Y | 413 |
| Tabor Academy | Marion | MA | 9-12 | Co-Ed | Y | 513 |
| Taft School | Watertown | CT | 9 to 12 | Co-Ed | Y | 596 |
| Tallulah Falls School | Tallulah Falls | GA | 6-12 | Co-Ed | Y | 467 |
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| The Thacher School | Ojai | CA | 9-12 | Co-Ed | Y | 242 |
| Thomas Jefferson School | St. Louis | MO | 7-12 | Co-Ed | Y | 81 |
| Thornton Academy | Saco | ME | 6-12 | Co-Ed | Y | 1630 |
| Tilton School | Tilton | NH | 9-PG | Co-Ed | Y | 257 |
| Trinity-Pawling School | Pawling | NY | 8-PG | All-Boys | Y | 300 |
| Valley Forge Military Academy & College | Wayne | PA | 7-12 | All-Boys | Y | 300 |
| Verde Valley School | Sedona | AZ | 9-12 | Co-Ed | Y | 120 |
| Vermont Academy | Saxtons River | VT | 9-PG | Co-Ed | Y | 230 |
| Villanova Preparatory School | Ojai | CA | 9-12 | Co-Ed | Y | 315 |
| Wasatch Academy | Mt. Pleasant | UT | 8-12 | Co-Ed | Y | 350 |
| Washington Academy | East Machias | ME | 9-12 | Co-Ed | Y | 440 |
| Wayland Academy | Beaver Dam | WI | 9-12 | Co-Ed | Y | 190 |
| The Webb School | Bell Buckle | TN | 6-12 | Co-Ed | Y | 315 |
| The Webb Schools | Claremont | CA | 9-12 | Co-Ed | Y | 413 |
| Western Reserve Academy | Hudson | OH | 9-12 | Co-Ed | Y | 400 |
| Westminster School | Simsbury | CT | 9-PG | Co-Ed | Y | 390 |
| Westover School | Middlebury | CT | 9-12 | All-Girls | Y | 204 |
| Westtown School | West Chester | PA | PK-12 | Co-Ed | Y | 660 |
| The White Mountain School | Bethlehem | NH | 9-PG | Co-Ed | Y | 125 |
| Wilbraham & Monson Academy | Wilbraham | MA | 6-PG | Co-Ed | Y | 425 |
| The Williston Northampton School | Easthampton | MA | 7-PG | Co-Ed | Y | 530 |
| The Winchendon School | Winchendon | MA | 9-12 | Co-Ed | Y | 250 |
| Wolfeboro Camp School | Wolfeboro | NH | 6-12 | Co-Ed | Y | 178 |
| Woodlands Academy of the Sacred Heart | Lake Forest | IL | 9-12 | All-Girls | Y | 161 |
| Woodside Priory School | Portola Valley | CA | 6-12 | Co-Ed | Y | 385 |
| Worcester Academy | Worcester | MA | 6-PG | Co-Ed | Y | 600 |
| Wyoming Seminary College Preparatory School | Kingston | PA | PK-PG | Co-Ed | Y | 796 |