“Least restrictive environment, or LRE as it is more commonly called, is one of several vital components in the development of a child’s IEP and plays a critical role, influencing where a child spends his or her time at school, how services are provided, and the relationships the child develops within the school and community. Indeed, LRE is a foundational element in building an appropriate IEP that can improve outcomes for a child—in school and in life.”
This webpage walks you through the legal definition of LRE, how placement decisions are made and parents rights. It’s available in English and Spanish.