Klein Oak High School is a public high school serving students grades 9–12 in unincorporated Harris County, Texas. The school's principal is Thomas Hensley. It was established August 1982. Klein Oak was the third high school established in Klein Independent School District to serve grades 9 through 12.
Serving 3,766 students in grades 9-12, Klein Oak 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 51% (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 17:1 is higher than the Texas state level of 14:1.
Minority enrollment is 65% of the student body (majority Hispanic), which is lower than the Texas state average of 76% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 3,766 students
- Student-Teacher Ratio: 17:1
- Minority Enrollment: 65%
- Graduation Rate: 93% (Top 50% in TX)
- Overall Testing Rank: Top 50%
- Math Proficiency: 51% (Top 50%)
- Reading Proficiency: 56% (Top 50%)
- Science Proficiency: 65% (Top 20%)
- Source: National Center for Education Statistics (NCES), TX Dept. of Education
Top Rankings
Klein Oak High School ranks among the top 20% of public schools in Texas for:
Category
Attribute
Science Proficiency
Diversity
School Overview
Klein Oak High School's student population of 3,766 students has grown by 6% over five school years.
The teacher population of 221 teachers has grown by 6% over five school years.
Grades Offered
Grades 9-12
Total Students
3,766 students
Total Classroom Teachers
221 teachers
Year Founded
1982
School Calendar
School Rankings
Klein Oak 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 Klein Oak High School is 0.70, which is more 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
#2534 out of 8096 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
51%
44%
Reading/Language Arts Test Scores (% Proficient)
56%
51%
Science Test Scores (% Proficient)
65%
46%
Student-Teacher Ratio
17:1
14:1
American Indian
n/a
n/a
Asian
7%
6%
Hispanic
39%
54%
Black
15%
13%
White
35%
24%
Hawaiian
n/a
n/a
Two or more races
4%
3%
All Ethnic Groups
Graduation Rate
93%
90%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
34%
56%
Eligible for Reduced Lunch
7%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), TX Dept. of Education
School Notes
- School Mascot: Panthers
Frequently Asked Questions
What is Klein Oak High School's ranking?
Klein Oak High School is ranked #2534 out of 8,096 schools, which ranks it among the top 50% of public schools in Texas.
What schools are Klein Oak High School often compared to?
Klein Oak High Schoolis often viewed alongside schools like Klein High School, Klein Collins High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
51% 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 Klein Oak High School?
The graduation rate of Klein Oak High School is 93%, which is higher than the Texas state average of 90%.
How many students attend Klein Oak High School?
3,766 students attend Klein Oak High School.
What is the racial composition of the student body?
39% of Klein Oak High School students are Hispanic, 35% of students are White, 15% of students are Black, 7% of students are Asian, and 4% of students are Two or more races.
What is the student-teacher ratio of Klein Oak High School?
Klein Oak High School has a student ration of 17:1, which is higher than the Texas state average of 14:1.
What grades does Klein Oak High School offer ?
Klein Oak High School offers enrollment in grades 9-12
What school district is Klein Oak High School part of?
Klein Oak High School is part of Klein Independent School District.
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