Create a photorealistic 3D aerial view rendering of a modern educational or institutional campus. The campus should consist of multiple rectangular buildings with sleek, contemporary architecture featuring large glass facades and clean white rooftops. Design an open courtyard in the center with pedestrian pathways and landscaped green areas surrounding the buildings. Include subtle outdoor elements like small groups of people walking or interacting. Ensure there are cars parked and moving along a road adjacent to the site, bordered by grass strips and sidewalk. Incorporate realistic shadows and soft natural light for an early afternoon setting.