With an acceptance rate around 70%, CSUMB is accessible to most students with decent grades and test scores. CSUMB is one of the smaller of the California State University campuses, but it can boast of one of the most stunning coastal locations. In the graph above, students who got in are represented by the blue and green dots. As you can see, the majority of accepted students had a high school average of "B" or better, SAT scores (CR+M+W) of 1350 or higher, and ACT scores of 18 or higher. Note, however, that there are red data points (rejected students) throughout the graph. A few students with grades and scores that seem to be on target for CSUMB were rejected.
Unlike the University of California System, the California State University admission process is not holistic. Except for EOP students, applicants do not need to submit letters of recommendation or an application essay, and extracurricular involvement is not part of the standard application. Thus, the reason why an applicant with adequate scores and grades would be rejected tends to come down to a couple factors such as insufficient college preparatory classes or an incomplete application.
To learn more about the California State University at Monterey Bay, high school GPAs, SAT scores and ACT scores, these articles can help: