| Kids Quest | 37 Crystal Brook Hollow Rd., Mount Sinai, NY 11766 | Center |
| Kids of Mount Sinai | 37B Crystal Brook Hollow Road, Mount Sinai, NY 11766 | Center |
| The Learning Experience | 620 Rt. 25a, Mount Sinai, NY 11766 | Center |
| YMCA of Long Island / Brookhaven | 100 N. Country Road, Mount Sinai, NY 11766 | Preschool |