| Tri-County ROP, CA (District) |
| Tri-County School Corp, IN (District) |
| Tri-County School District, MN (District) |
| Tri-County Sp Ed Jnt Agreement, IL (District) |
| Tri-County Spec Educ Assoc, IL (District) |
| Tri-County Technology Center, OK (District) |
| Tri-Creek School Corporation, IN (District) |
| Tri-Heights Career Prep Consortium CTPD, OH (District) |
| Tri-Rivers Joint Vocational School District, OH (District) |
| Tri-Rivers JVSD CTPD, OH (District) |
| Tri-State STEM+M Early College High School, OH (District) |
| Tri-Township Cons School Corp, IN (District) |
| Tri-Valley Academy of Arts and Academics, MI (PSA) |
| Tri-valley Central School District, NY (District) |
| Tri-Valley Local School District, OH (District) |
