| School Name | Street Address | City | State |
| Hackley School |
293 Benedict Avenue
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Tarrytown | NY |
| Hebron Academy |
P.O. Box 309, 339 Paris Road
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Hebron | ME |
| High Mowing School |
222 Isaac Frye Highway
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Wilton | NH |
| Hillside School |
404 Robin Hill Road
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Marlborough | MA |
| Holderness School |
Chapel Lane, P.O. Box 1879
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Plymouth | NH |
| Hoosac School |
14 Pine Valley Road, PO Box 9
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Hoosick | NY |
| Hotchkiss School Top 25 |
11 Interlaken Road
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Lakeville | CT |
| Houghton Academy |
9790 Thayer Street
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Houghton | NY |
| Hyde School |
150 Route 169, P.O. Box 237
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Woodstock | CT |
| Hyde School |
616 High Street
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Bath | ME |