San Marcos High
San Marcos, CA · High School · Grades 9-12
San Marcos High is a high school in San Marcos, CA with 3,380 students enrolled and a 66% proficiency rate. Part of San Marcos Unified. NCES data from the U.S. Department of Education.
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About This School
San Marcos High is a high school located in San Marcos, California. The school serves 3,380 students in grades 9-12. The student-to-teacher ratio is 27.0:1.
According to EDFacts assessment data, 66% of students meet grade-level proficiency standards in combined math and reading. The school reports a 73% graduation rate.
33% of students qualify for free or reduced-price lunch.
San Marcos High is part of the San Marcos Unified in California.
How This School Compares
San Marcos High has 3,380 students enrolled, making it larger than the average school in San Marcos Unified (1,027 students). Its 66% proficiency rate is 12 percentage points above the district average of 54%. Compared to the California state average of 45%, the school performs 21 points higher. The 27.0:1 student-teacher ratio is above the national average of 16:1.
Frequently Asked Questions
San Marcos High has 3,380 students enrolled in grades 9-12. The student-to-teacher ratio is 27.0:1.
According to EDFacts data, 66% of students at San Marcos High meet grade-level proficiency standards in combined math and reading assessments.
San Marcos High has a 73% graduation rate, measuring the percentage of students who graduate within four years.
San Marcos High is part of the San Marcos Unified in San Marcos, California. You can view all schools in this district on the district page.
All data on this page comes from the National Center for Education Statistics (NCES) Common Core of Data and EDFacts assessment results. These are official federal datasets published by the U.S. Department of Education.
School profiles are built from NCES directory data and EDFacts assessment results. Proficiency rates reflect combined math and reading performance. Graduation rates are reported for high schools with available data.
this entity is one of the data points covered by this site’s U.S. K-12 school outcomes and enrollment dataset. The detail above comes directly from NCES Common Core of Data and EDFacts; the context that follows situates the headline numbers against the broader distribution across U.S. public schools and districts.
The methodology behind every numeric value on this page is publicly documented on the NCES Common Core of Data and EDFacts portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. public schools and districts. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Source: NCES Common Core of Data, 2026.