Platte City Middle School entranceWelcome to Platte City Middle School (PCMS)! We are a sixth through eighth grade middle school in the northern attendance area of Platte County School District. We are committed to preparing individual learners for success in life by providing meaningful experiences in a safe and caring environment. To enhance and broaden PCR-3's character education efforts, Platte City Middle School launched the CharacterStrong program in our building beginning with the 2020-21 school year.