Platte County High School
| Platte County R-3 High School | |
|---|---|
| Address | |
1501 Branch Street , 64079-8384 United States | |
| Information | |
| Type | Public |
| Principal | Kiel Giese |
| Staff | 82.12 (FTE) |
| Grades | 9–12 |
| Number of students | 1,342 (2024-2025) |
| Student to teacher ratio | 16.20 |
| Campus | Town |
| Color(s) | |
| Athletics conference | Greater Kansas City Suburban |
| Mascot | Pirate |
| Website | www |
Platte County R-3 High School is located in Platte City, Missouri. It is the sole high school of Platte County School District Number 3.
The school district includes portions of Kansas City, as well as Ferrelview, Platte City, Tracy, and the Platte County portion of Smithville.