| School | State | Tuition | Students | International Students | SAT | Type and Grade |
|---|---|---|---|---|---|---|
| Cate School | $83,580 | 307 | 17% | 1352 | 9-12 | |
| Canadian College Italy | CAD 40,000 | 80 | 20% | -- | Grades 10-12, PG | |
| Church Farm School | $50,400 | 150 | 3% | 1101 | 9-12 | |
| Chapel Hill-Chauncy Hall School | $76,500 | 200 | 20% | 1320 | 9-12, PG | |
| Chatham Hall | $68,000 | 121 | 26% | 1235 | 9-12 | |
| Cheshire Academy | $66,225 | 363 | 26% | 1270 | 9-12, PG | |
| Choate Rosemary Hall | $71,420 | 860 | 18% | 1412 | 9-12, PG | |
| Colorado Rocky Mountain School | $77,500 | 177 | 15% | 1354 | 9-12 | |
| Colorado Timberline Academy | $33,000 | 46 | 5% | -- | 9-12, PG | |
| Concord Academy | $81,560 | 415 | 13% | 1495 | 9-12 | |
| Country Day School, Costa Rica | $14,970 | 875 | -- | -- | PreK-12 | |
| Cranbrook Schools | $60,000 | 814 | 13% | 1420 | 9-12 | |
| Culver Academies | $65,000 | 830 | 20% | 1240 | 9-12 | |
| Cushing Academy | $77,800 | 385 | 29% | 1348 | 9-12, PG | |
| Dana Hall School | $77,975 | 454 | 11% | 1337 | 9-12 | |
| Darlington School | $65,370 | 430 | 20% | 1285 | 9-12, PG | |
| Darrow School | $68,315 | 110 | 20% | 1065 | 9-12 | |
| Deerfield Academy | $74,440 | 649 | 13% | 1384 | 9-12, PG | |
| Delphian School | $81,090 | 229 | 31.4% | 1362 | 6-12 | |
| Donahue Academy of Ave Maria | $9,180 | 268 | -- | -- | K-12 |