Authorizer Info

State-Approved, Public Oversight

Sandstone Montessori is authorized by the Minnesota Guild

A charter school authorizer is a state-approved, public oversight entity responsible for holding schools accountable for performance and operational expectations. The Guild promotes educational innovation in Minnesota schools and, in turn, improves the overall achievement of students by advocating for and creating a systemic approach to charter school approval, formation, development and operation that promotes in-depth accountability for student success.

For more information on the Minnesota Guild, visit