UPCOMING EVENTS SEE ALL Mountain Shadows Montessori School Share: ChildcareNon-Profit OrganizationsEducation Mountain Shadows Montessori School Visit Website Request Info 4154 63rd St Boulder, CO 80301 (303) 530-5353 (303) 530-5230 (fax) http://www.mountainshadows.org Facebook Twitter YouTube Hours: Office hours: 7:45am-3:30pm School hours: 7:30am-5:30pm About About Helping children from 12 months to 12 years old become their highest and best selves.