Since 2012, the Collaborative has brought together thought leaders and experts from across the social sector. The event started in San Diego before moving to the home city of Classy’s founders, Boston. In 2020 and 2021, the experience was entirely virtual, bringing together 7,000 attendees and 5,000 organizations from 93 countries. This year, the Collaborative safely reunited changemakers in the city of brotherly love, Philadelphia.
