San Marcos High School is a secondary school in San Marcos, Texas. The school serves grades 9 through 12, and is part of the San Marcos Consolidated Independent School District. The school appeared in the movie Boyhood starring Ellar Coltrane.
Serving 2,494 students in grades 9-12, San Marcos High School ranks in the bottom 50% of all schools in Texas for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 16% (which is lower than the Texas state average of 44%). The percentage of students achieving proficiency in reading/language arts is 32% (which is lower than the Texas state average of 51%).
The student-teacher ratio of 15:1 is higher than the Texas state level of 14:1.
Minority enrollment is 81% of the student body (majority Hispanic), which is higher than the Texas state average of 75% (majority Hispanic).
Quick Facts (2025)
- Grades: 9-12
- Enrollment: 2,494 students
- Student-Teacher Ratio: 15:1
- Minority Enrollment: 81%
- Graduation Rate: 84% (Btm 50% in TX)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 16% (Btm 50%)
- Reading Proficiency: 32% (Btm 50%)
- Science Proficiency: 34% (Btm 50%)
- Source: National Center for Education Statistics (NCES), TX Dept. of Education
School Overview
San Marcos High School's student population of 2,494 students has grown by 7% over five school years.
The teacher population of 168 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
Total Students
2,494 students
Gender %
Total Classroom Teachers
168 teachers
Year Founded
1918
School Rankings
San Marcos High School ranks within the bottom 50% of all 8,096 schools in Texas (based off of combined math and reading proficiency testing data).
The diversity score of San Marcos High School is 0.43, which is less than the diversity score at state average of 0.64. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#7541 out of 8096 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
16%
44%
Reading/Language Arts Test Scores (% Proficient)
32%
51%
Science Test Scores (% Proficient)
34%
46%
Student-Teacher Ratio
15:1
14:1
American Indian
n/a
n/a
Asian
1%
6%
Hispanic
73%
53%
Black
6%
13%
White
19%
25%
Hawaiian
n/a
n/a
Two or more races
1%
3%
All Ethnic Groups
Graduation Rate
84%
90%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
72%
57%
Eligible for Reduced Lunch
3%
5%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), TX Dept. of Education
School Notes
- School Mascot: Rattlesnake
Profile last updated: 02/09/2025
Frequently Asked Questions
What is San Marcos High School's ranking?
San Marcos High School is ranked #7541 out of 8,096 schools, which ranks it among the bottom 50% of public schools in Texas.
What schools are San Marcos High School often compared to?
San Marcos High Schoolis often viewed alongside schools like Wimberley High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
16% of students have achieved math proficiency (compared to the 44% TX state average), while 32% of students have achieved reading proficiency (compared to the 51% TX state average).
What is the graduation rate of San Marcos High School?
The graduation rate of San Marcos High School is 84%, which is lower than the Texas state average of 90%.
How many students attend San Marcos High School?
2,494 students attend San Marcos High School.
What is the racial composition of the student body?
73% of San Marcos High School students are Hispanic, 19% of students are White, 6% of students are Black, 1% of students are Asian, and 1% of students are Two or more races.
What is the student-teacher ratio of San Marcos High School?
San Marcos High School has a student ration of 15:1, which is higher than the Texas state average of 14:1.
What grades does San Marcos High School offer ?
San Marcos High School offers enrollment in grades 9-12
What school district is San Marcos High School part of?
San Marcos High School is part of San Marcos CISD School District.
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