High schoolers excel at Oxford quantum course using pictorial mathematics. - Bob Coecke; Aleks Kissinger; Stefano Gogioso; Selma Dündar-Coecke; Caterina Puca; Lia Yeh; Muhammad Hamza Waseem; Emmanuel M. Pothos; Sieglinde M.-L. Pfaendler; Vincent Wang-Mascianica; Thomas Cervoni; Ferdi Tomassini; et al. (CoRR, 2025)