The Summer School in Data Visualization aims to equip participants with both fundamental and cutting-edge skills in creating impactful data visualizations for science dissemination, combining traditional design principles with modern AI capabilities. The program includes morning lectures by experts spanning from data visualization practices to the role of generative AI, and afternoon lab sessions where participants work on group projects. Speakers include Prof. Enrico Bertini from Northeastern University (Boston, MA) and faculty members from the MaLGa Center and UniGe's dAD Department. The school is aimed at PhD students of all disciplines, master's thesis students, and professionals who want to master data visualization principles and leverage AI tools to create more impactful and innovative visual storytelling.