| School Name | Grades | Address | Zip | Phone | County | Type | District Name |
| Accompsett Elementary School | K-5 | 1 Lincoln St Smithtown, NY | 11787 | (631) 382-4155 | Suffolk | public | Smithtown Central School District |
| Accompsett Middle School | 6-8 | Meadow Rd Smithtown, NY | 11787 | (631) 382-2305 | Suffolk | public | Smithtown Central School District |
| Branch Brook Elementary School | K-5 | 15 Ridgely Rd Smithtown, NY | 11787 | (631) 382-4205 | Suffolk | public | Smithtown Central School District |
| Developmental Disabilities Inst | n/a | 99 Hollywood Dr Smithtown, NY | 11787 | (631) 366-2916 | Suffolk | private | |
| Dogwood Elementary School | K-5 | 50 Dogwood Dr Smithtown, NY | 11787 | (631) 382-4255 | Suffolk | public | Smithtown Central School District |
| Forest Brook Elementary School | K-5 | 299 Lilac Ln Smithtown, NY | 11787 | (631) 265-3265 | Suffolk | public | Hauppauge Union Free School District |
| Ivy League School | PK-7 | 211 Brooksite Dr Smithtown, NY | 11787 | (631) 265-4177 | Suffolk | private | |
| Mount Pleasant Elementary School | K-5 | 33 Plaisted Ave Smithtown, NY | 11787 | (631) 382-4354 | Suffolk | public | Smithtown Central School District |
| Pines Elementary School | K-5 | 22 Holly Dr Smithtown, NY | 11787 | (631) 543-8700 | Suffolk | public | Hauppauge Union Free School District |
| Smithtown Christian School | PK-12 | 1 Higbie Dr Smithtown, NY | 11787 | (631) 265-3334 | Suffolk | private | |
| Smithtown Elementary School | K-5 | 51 Lawrence Ave Smithtown, NY | 11787 | (631) 382-4505 | Suffolk | public | Smithtown Central School District |
| Smithtown High School-West | 9-12 | 100 Central Rd Smithtown, NY | 11787 | (631) 382-2905 | Suffolk | public | Smithtown Central School District |
| St. Patrick Elementary School | PK-8 | 284 E Main St Smithtown, NY | 11787 | (631) 724-0285 | Suffolk | private | |