"A Purple Star School is a public or charter school that has committed to supporting the unique educational and social-emotional needs of military-connected children. 

These schools recognize that military-connected students must move whenever their active-duty parent receives a relocation order (called a Permanent Change of Station) and will uproot and change schools far more often than their civilian peers. 

In fact, a military-connected child can expect to move six to nine times from kindergarten through their high school graduation, with approximately 200,000 students transitioning to a new school in any given year." 

 Purple Star Schools - Military Child Education Coalition