The process for applying to CSU San Marcos using the CSU Mentor online application is easy. Pay particular attention to the residency section of the application:
When completing the application leave the section requesting your Social Security Number blank.
On Screen 3, answer all questions completely and select "None of the Above" for Citizenship status.
On Screen 4, complete all questions as they pertain to your stay in California.
Complete the entire application, being careful to ensure accuracy of information. Upon completion and submission of the application you will receive a notice from CSU San Marcos confirming submission of your application. The communication will also provide you with your Student ID number.