High school student visitors and SCIPP researchers participated in the 2022 Quarknet Particle Physics Masterclass on March 5. Students learned about the fundamental forces and particles, and they analyzed data from the ATLAS experiment at CERN. Students also visited a working cloud chamber detector and joined a videoconference with researchers from Fermilab and Berkeley Lab. Thanks to all of the students and our wonderful mentors! We are looking forward to more events like this in the future.