Walnut Hill Elementary celebrates 100 years with new outdoor learning garden (video) 0 By The Hub on October 31, 2017 News Briefs Real School Gardens with Boston Consulting Group and Sprouts Grocery installed an outdoor learning garden to commemorate the 100-year anniversary of Walnut Hill Elementary School. Watch the above video to see how the garden came to be. Trustee District 1 Walnut Hill Elementary School