Calvin Nelms High School

20625 Clay Rd
Katy, TX 77449
10/
10
Top 10%
Serving 183 students in grades 9-12, Calvin Nelms High School ranks in the top 10% of all schools in Texas for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).
The percentage of students achieving proficiency in math is 70-79% (which is higher than the Texas state average of 44%). The percentage of students achieving proficiency in reading/language arts is 70-79% (which is higher than the Texas state average of 51%).
The student-teacher ratio of 18:1 is higher than the Texas state level of 14:1.
Minority enrollment is 84% of the student body (majority Hispanic), which is higher than the Texas state average of 76% (majority Hispanic).

Quick Facts (2026)

  • School Type: Charter School
  • Grades: 9-12
  • Enrollment: 183 students
  • Student-Teacher Ratio: 18:1
  • Minority Enrollment: 84%
  • : ≥90% (Top 50% in TX)
  • : Top 10%
  • : 70-79% (Top 10%)
  • : 70-79% (Top 10%)
  • : 80-89% (Top 5%)
  • Source: National Center for Education Statistics (NCES), TX Dept. of Education

Top Rankings

Calvin Nelms High School ranks among the top 20% of public schools in Texas for:

School Overview

Calvin Nelms High School's student population of 183 students has grown by 10% over five school years.
The teacher population of 10 teachers has grown by 11% over five school years.
School Type
Grades Offered
Grades 9-12
Total Students
183 students
Total Classroom Teachers
10 teachers
Year Founded
1999
School Calendar

School Rankings

Calvin Nelms High School ranks within the top 10% of all 8,096 schools in Texas (based off of combined math and reading proficiency testing data).
The diversity score of Calvin Nelms High School is 0.59, 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.
This School
State Level (TX)
#481 out of 8096 schools
(Top 10%)
70-79%
44%
70-79%
51%
80-89%
46%
Student-Teacher Ratio
18:1
14:1
American Indian
n/a
n/a
Asian
4%
6%
Hispanic
60%
54%
Black
16%
13%
White
16%
24%
Hawaiian
n/a
n/a
Two or more races
4%
3%
All Ethnic Groups
0.59
≥90%
90%
Eligible for Free Lunch
26%
56%
Eligible for Reduced Lunch
10%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), TX Dept. of Education

Frequently Asked Questions

What is Calvin Nelms High School's ranking?
Calvin Nelms High School is ranked #481 out of 8,096 schools, which ranks it among the top 10% of public schools in Texas.
What percent of students have achieved state testing proficiency in math and reading?
70-79% of students have achieved math proficiency (compared to the 44% TX state average), while 70-79% of students have achieved reading proficiency (compared to the 51% TX state average).
What is the graduation rate of Calvin Nelms High School?
The graduation rate of Calvin Nelms High School is 90%, which is equal to the Texas state average of 90%.
How many students attend Calvin Nelms High School?
183 students attend Calvin Nelms High School.
What is the racial composition of the student body?
60% of Calvin Nelms High School students are Hispanic, 16% of students are Black, 16% of students are White, 4% of students are Asian, and 4% of students are Two or more races.
What is the student-teacher ratio of Calvin Nelms High School?
Calvin Nelms High School has a student ration of 18:1, which is higher than the Texas state average of 14:1.
What grades does Calvin Nelms High School offer ?
Calvin Nelms High School offers enrollment in grades 9-12
What school district is Calvin Nelms High School part of?
Calvin Nelms High School is part of Calvin Nelms Charter Schools.

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Quick Facts (2026)

  • School Type: Charter School
  • Grades: 9-12
  • Enrollment: 183 students
  • Student-Teacher Ratio: 18:1
  • Minority Enrollment: 84%
  • : ≥90% (Top 50%)
  • : Top 10%
  • : 70-79% (Top 10%)
  • : 70-79% (Top 10%)
  • : 80-89% (Top 5%)
  • Source: National Center for Education Statistics (NCES), TX Dept. of Education

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