Thomas C. Clark High School is a public high school, in the Northside Independent School District in San Antonio, Texas and serves a portion of Scenic Oaks. During 2022–2023, Clark High School had an enrollment of 2,835 students and a student to teacher ratio of 17.29.
Serving 2,750 students in grades 9-12, Clark High School ranks in the top 50% of all schools in Texas for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 50% (which is higher than the Texas state average of 44%). The percentage of students achieving proficiency in reading/language arts is 56% (which is higher than the Texas state average of 51%).
The student-teacher ratio of 16:1 is higher than the Texas state level of 14:1.
Minority enrollment is 77% of the student body (majority Hispanic), which is higher than the Texas state average of 76% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 2,750 students
- Student-Teacher Ratio: 16:1
- Minority Enrollment: 77%
- Graduation Rate: 91% (Top 50% in TX)
- Overall Testing Rank: Top 50%
- Math Proficiency: 50% (Top 50%)
- Reading Proficiency: 56% (Top 50%)
- Science Proficiency: 73% (Top 10%)
- Source: National Center for Education Statistics (NCES), TX Dept. of Education
Top Rankings
Clark High School ranks among the top 20% of public schools in Texas for:
Category
Attribute
Science Proficiency
School Overview
Clark High School's student population of 2,750 students has stayed relatively flat 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
2,750 students
Total Classroom Teachers
168 teachers
Year Founded
1978
Colors
White, Black, Silver
School Calendar
School Rankings
Clark High School ranks within the top 50% of all 8,096 schools in Texas (based off of combined math and reading proficiency testing data).
The diversity score of Clark High School is 0.61, 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
#2577 out of 8096 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
50%
44%
Reading/Language Arts Test Scores (% Proficient)
56%
51%
Science Test Scores (% Proficient)
73%
46%
Student-Teacher Ratio
16:1
14:1
American Indian
n/a
n/a
Asian
8%
6%
Hispanic
57%
54%
Black
7%
13%
White
23%
24%
Hawaiian
n/a
n/a
Two or more races
5%
3%
All Ethnic Groups
Graduation Rate
91%
90%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
31%
56%
Eligible for Reduced Lunch
3%
4%
School Statewide Testing
School District Name
Northside Independent School District
Source: National Center for Education Statistics (NCES), TX Dept. of Education
School Notes
- School Mascot: Cougars
Frequently Asked Questions
What is Clark High School's ranking?
Clark High School is ranked #2577 out of 8,096 schools, which ranks it among the top 50% of public schools in Texas.
What schools are Clark High School often compared to?
Clark High Schoolis often viewed alongside schools like Reagan High School, Brandeis High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
50% of students have achieved math proficiency (compared to the 44% TX state average), while 56% of students have achieved reading proficiency (compared to the 51% TX state average).
What is the graduation rate of Clark High School?
The graduation rate of Clark High School is 91%, which is higher than the Texas state average of 90%.
How many students attend Clark High School?
2,750 students attend Clark High School.
What is the racial composition of the student body?
57% of Clark High School students are Hispanic, 23% of students are White, 8% of students are Asian, 7% of students are Black, and 5% of students are Two or more races.
What is the student-teacher ratio of Clark High School?
Clark High School has a student ration of 16:1, which is higher than the Texas state average of 14:1.
What grades does Clark High School offer ?
Clark High School offers enrollment in grades 9-12
What school district is Clark High School part of?
Clark High School is part of Northside Independent School District.
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