| Horicon School District, WI (District) |
| Horizon Academy West, NM (PSA) |
| Horizon Community Learning Center Inc., AZ (District) |
| Horizon Science Acad Cleveland, OH (PSA) |
| Horizon Science Acad-Belmont Charter Sch, IL (PSA) |
| Horizon Science Acad-McKinley Park Charter Sch, IL (PSA) |
| Horizon Science Academy Columbus, OH (PSA) |
| Horizon Science Academy Columbus Middle School, OH (PSA) |
| Horizon Science Academy Dayton Downtown , OH (PSA) |
| Horizon Science Academy Dayton High School, OH (PSA) |
| Horizon Science Academy Elementary School, OH (PSA) |
| Horizon Science Academy Lorain, OH (PSA) |
| Horizon Science Academy Primary, OH (PSA) |
| Horizon Science Academy Toledo, OH (PSA) |
| Horizon Science Academy Twin Cities, MN (PSA) |
