The CLASS programs provide students with academic and tutoring support, computer lab facilities, counseling and advising services, and general information for success at Cal State San Marcos. CLASS promotes the idea that students learn most effectively and progress through college curriculum more successfully by supplementing their classroom learning with the encouragement and support of staff and peer tutors that are well versed in the subject matter and sympathetic to the demands of college life.

The staff of the CLASS are carefully selected and trained to assist a diversified student population: The Writing Center serves all students, from entry level to graduate level, looking for help and feedback on all stages of the writing process; the Math Lab invites students seeking assistance in lower division, and pre-baccalaureate courses in mathematics; the Language Learning Center (LLC) serves students who are studying one of the languages on campus or who are working to fulfill the Language Other Than English Requirement (LOTER); Proficiency Services consists of the Early Assessment Program (EAP) for high school students and provides services geared toward helping current CSUSM students meet proficiency requirements and also administers the Entry Level Math (ELM) exam and English Placement Test (EPT); and Personalized Academic Success Services (PASS) works with students to assess each student's situation holistically and provide appropriate support and resources (on-campus or in the community) to help students acheive academic and personal success.