| Business | Phone |
| Board Of Cooperative Education 161 Lake Shore Rd, Lake Ronkonkoma 11779 | (631) 737-6601 |
| Gatelot Avenue Elementary Sch 65 Gatelot Ave, Lake Ronkonkoma 11779 | (631) 471-1810 |
| Hiawatha Elementary School 97 Patchogue Holbrook Rd, Lake Ronkonkoma 11779 | (631) 471-1830 |
| Sachem Central School District 51 School St, Lake Ronkonkoma 11779 | (631) 467-8729 |
| Sachem High School North 212 Smith Rd, Lake Ronkonkoma 11779 | (631) 471-1400 |
| Sachem High School South 51 School St, Lake Ronkonkoma 11779 | (631) 471-1700 |