Green River Montessori School

There are two locations for Green River Montessori School. The main school and office are locate on 12th and Harvey Street Northeast. This site will accommodate infants through kindergarten. On the opposite side of the street is our Elementary/Middle School and our Before and After School Program, better known as “The Brick School House.”Green River Montessori School is accredited by the National Association for the Education of Young Children (NAEYC) and the elementary program is approved by the Washington State Superintendent of Public Instruction(OSPI). The school is an active member of the Pacific Northwest Montessori Association.


Green River Montessori School is owned by Diana Mamerto Holz. Diana is married to Ron Holz who both grew up and went to school in Auburn. In 1974, Diana operated a small child care program in their home so that she could care for their only child, Cheri. Over the years, and one child later (son Gary), the business grew and Green River Montessori School was established.

Phone 253 833-7010