Parrish McCall broke ground on P.K. Yonge Developmental Research School middle and high school expansion on Monday. The 75,000 square foot secondary school building will host a variety of non-traditional learning spaces and will house P.K.’s middle and high school students. The new building incorporates community-style spaces that support collaboration, flexibility, and mobility, as well as individual work. Expansion scheduled for completion in December 2020.