| Business | Phone |
| Concordia Lutheran School 7424 N 2nd St, Machesney Park 61115 | (815) 633-6450 |
| Ralston Elementary School 710 Ralston Rd, Machesney Park 61115 | (815) 654-4505 |
| New Hope Christian School 1100 Old Ralston Rd, Machesney Park 61115 | (815) 633-6505 |
| Olson Park Elementary School 1414 Minahan Dr, Machesney Park 61115 | (815) 654-4504 |
| Harlem High School 1 Huskie Cir, Machesney Park 61115 | (815) 654-4511 |
| Harlem School District 122 8605 N 2nd St, Machesney Park 61115 | (815) 654-4500 |
| Harlem Special Education 8605 N 2nd St, Machesney Park 61115 | (815) 654-4508 |
| Harlen Board Of Education 1102 Evans Ave, Machesney Park 61115 | (815) 654-4581 |
| Marquette Elementary School 8500 Victory Ln, Machesney Park 61115 | (815) 654-4503 |
| Machesney Elementary School 8615 N 2nd St, Machesney Park 61115 | (815) 654-4509 |