**UC Berkeley COSMOS** is a 4-week, **residential STEM program** hosted at UC Berkeley and other UC campuses for motivated California high school students. Participants live on campus, take part in a focused academic cluster (such as engineering, computer science, math, or natural sciences), and work closely with UC faculty, researchers, and graduate students. The curriculum typically combines lectures, labs, group projects, and independent inquiry, giving students a realistic view of college-level STEM study and research. This program is well-suited for students who are already strong in math and science and are looking for a challenging summer experience that goes beyond standard high school courses. Applicants should be prepared for intensive academic work and collaborative problem-solving. COSMOS can strengthen a college application by demonstrating: - **Sustained interest in STEM** through a selective, immersive program - **Experience with college-level coursework and labs** - **Research-style or project-based work**, often culminating in presentations or reports Students considering STEM majors, research opportunities, or future work in science and technology fields may find COSMOS especially valuable as an introduction to the expectations and environment of a major research university. For details on eligibility, clusters, and application procedures, visit the program website.