What is the CSU System?

The California State University (CSU) System

California State University San Marcos (CSUSM) was the 20th campus established in the 23-campus California State University (CSU) system. When you apply to CSUSM, you apply through the California State University common application Cal State Apply. With 412,000 students and 43,000 faculty and staff, the CSU is the largest, most diverse and one of the most affordable university systems in the country.