Calvin Nelms High School (Ranked Top 10% for 2025-26)

Calvin Nelms High School

20625 Clay Rd
Katy, TX 77449

10/

Top 10%

Serving 168 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 is 70-79% (which is higher than the Texas state average of 44%). The percentage of students achieving is 70-79% (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 82% of the student body (majority Hispanic), which is higher than the Texas state average of 75% (majority Hispanic).

Quick Facts (2025-26)

School Type: Charter School
Grades: 9-12
Enrollment: 168 students
Student-Teacher Ratio: 17:1
Minority Enrollment: 82%
: ≥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 168 students has declined by 5% over five school years.

The teacher population of 10 teachers has declined by 9% over five school years.

School Type

Charter School

Grades Offered

Grades 9-12

View Data

Distribution of Students By Grade Trends
Grade	Calvin Nelms High School
9	45
10	48
11	37
12	38

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Total Students

168 students

View Data

Total Students Trends Over Years (2003-2023)
Year	Calvin Nelms High School
2023	169
2022	153
2021	165
2020	177
2019	177
2018	168
2017	168
2016	165
2015	157
2014	151
2013	161
2012	147
2011	156
2010	181
2009	136
2008	168
2007	175
2006	94
2005	122
2004	140
2003	150

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Gender %

Total Classroom Teachers

10 teachers

View Data

Total Classroom Teachers Trends Over Years (2003-2023)
Year	Calvin Nelms High School
2023	10
2022	10
2021	9
2020	11
2019	11
2018	12
2017	12
2016	12
2015	11
2014	11
2013	12
2012	12
2011	11
2010	9
2009	9
2008	10
2007	10
2006	8
2005	7
2004	7
2003	9

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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 of Calvin Nelms High School is 0.58, 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%)

View Data

Overall School Rank Trends Over Years (2012-2023)
Year	Calvin Nelms High School
2023	#481
2022	#686
2021	#1178
2019	#821
2018	#681
2017	#1237
2016	#2338
2015	#1297
2014	#4594
2013	#2014
2012	#4763

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70-79%

44%

View Data

Math Proficiency Comparison Over Years (2012-2023)
Year	Calvin Nelms High School	Texas	Calvin Nelms Charter Schools
2023	74%	44%	73%
2022	64%	41%	52%
2021	44%	37%	47%
2019	64%	51%	72%
2018	74%	49%	62%
2017	90%	78%	87%
2016	84%	75%	82%
2015	90%	73%	77%
2014	74%	76%	72%
2013	87%	78%	87%
2012	74%	83%	77%

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70-79%

51%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2011-2022)
Year	Calvin Nelms High School	Texas	Calvin Nelms Charter Schools
2022	74%	51%	72%
2021	84%	42%	72%
2019	74%	47%	72%
2018	64%	45%	62%
2017	84%	72%	87%
2016	77%	71%	85%
2015	82%	73%	83%
2014	72%	75%	78%
2013	82%	78%	84%
2012	90%	88%	92%
2011	84%	88%	92%

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80-89%

46%

View Data

Science Proficiency Comparison Over Years (2021-2022)
Year	Calvin Nelms High School	Texas	Calvin Nelms Charter Schools
2022	84%	46%	77%
2021	74%	43%	77%

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Student-Teacher Ratio

17:1

14:1

View Data

Student-Teacher Ratio Comparison Over Years (2003-2023)
Year	Calvin Nelms High School	Texas	Calvin Nelms Charter Schools
2023	17:1	14:1	15:1
2022	15:1	14:1	14:1
2021	18:1	14:1	15:1
2020	16:1	15:1	15:1
2019	16:1	15:1	15:1
2018	14:1	15:1	13:1
2017	14:1	15:1	13:1
2016	14:1	15:1	13:1
2015	14:1	15:1	13:1
2014	14:1	15:1	15:1
2013	13:1	15:1	15:1
2012	13:1	15:1	13:1
2011	14:1	15:1	14:1
2010	21:1	15:1	17:1
2009	15:1	14:1	13:1
2008	17:1	14:1	15:1
2007	18:1	15:1	16:1
2006	12:1	15:1	15:1
2005	17:1	15:1	17:1
2004	20:1	15:1	21:1
2003	17:1	15:1	17:1

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American Indian

n/a

Asian

View Data

Asian Student Percentage Comparison Over Years (2003-2023)
Year	Calvin Nelms High School	Texas	Calvin Nelms Charter Schools
2023	5%	5%	4%
2022	5%	5%	5%
2021	3%	5%	4%
2020	3%	5%	4%
2019	3%	5%	4%
2018	1%	5%	4%
2017	1%	5%	4%
2016	1%	4%	2%
2015	1%	4%	1%
2014	2%	4%	2%
2012	1%	4%	1%
2011	2%	4%	1%
2010	2%	4%	2%
2009	1%	4%
2008	1%	4%	1%
2007	3%	4%	2%
2005	2%	3%	2%
2004	3%	3%	3%
2003	2%	3%	2%

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Hispanic

61%

53%

View Data

Hispanic Student Percentage Comparison Over Years (2003-2023)
Year	Calvin Nelms High School	Texas	Calvin Nelms Charter Schools
2023	60%	53%	59%
2022	65%	53%	61%
2021	65%	53%	64%
2020	55%	53%	58%
2019	55%	53%	58%
2018	55%	52%	59%
2017	55%	52%	59%
2016	50%	52%	54%
2015	52%	52%	54%
2014	53%	52%	54%
2013	54%	51%	54%
2012	46%	51%	42%
2011	38%	50%	34%
2010	35%	49%	34%
2009	38%	48%	31%
2008	41%	47%	34%
2007	32%	46%	25%
2006	38%	46%	26%
2005	23%	45%	19%
2004	29%	44%	29%
2003	27%	43%	27%

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Black

12%

13%

View Data

Black Student Percentage Comparison Over Years (2003-2023)
Year	Calvin Nelms High School	Texas	Calvin Nelms Charter Schools
2023	13%	13%	18%
2022	13%	13%	17%
2021	12%	13%	16%
2020	13%	13%	16%
2019	13%	13%	16%
2018	9%	13%	10%
2017	9%	13%	10%
2016	11%	13%	10%
2015	12%	13%	12%
2014	7%	13%	9%
2013	7%	13%	9%
2012	5%	13%	7%
2011	11%	13%	10%
2010	10%	14%	9%
2009	10%	14%	15%
2008	11%	14%	12%
2007	11%	14%	15%
2006	11%	15%	17%
2005	5%	14%	9%
2004	4%	14%	4%
2003	5%	14%	5%

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White

18%

25%

View Data

White Student Percentage Comparison Over Years (2003-2023)
Year	Calvin Nelms High School	Texas	Calvin Nelms Charter Schools
2023	19%	26%	15%
2022	16%	26%	16%
2021	18%	26%	14%
2020	27%	27%	21%
2019	27%	27%	21%
2018	32%	28%	25%
2017	32%	28%	25%
2016	37%	29%	33%
2015	34%	29%	32%
2014	36%	29%	33%
2013	37%	30%	34%
2012	46%	31%	49%
2011	47%	31%	53%
2010	52%	33%	54%
2009	49%	34%	54%
2008	46%	35%	52%
2007	54%	36%	58%
2006	77%	36%	70%
2005	70%	38%	70%
2004	64%	39%	64%
2003	66%	40%	66%

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Hawaiian

n/a

Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2013-2023)
Year	Calvin Nelms High School	Texas	Calvin Nelms Charter Schools
2023	3%	3%	4%
2022	1%	3%	1%
2021	2%	3%	2%
2020	2%	2%	1%
2019	2%	2%	1%
2018	3%	2%	2%
2017	3%	2%	2%
2016	1%	2%	1%
2015	1%	2%	1%
2014	1%	2%	1%
2013	1%	2%	2%

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All Ethnic Groups

0.58

0.64

View Data

Diversity Score Comparison Over Years (2003-2023)
Year	Calvin Nelms High School	Texas	Calvin Nelms Charter Schools
2023	0.59	0.64	0.60
2022	0.54	0.64	0.58
2021	0.53	0.64	0.55
2020	0.61	0.63	0.60
2019	0.61	0.63	0.60
2018	0.59	0.64	0.58
2017	0.59	0.64	0.58
2016	0.61	0.63	0.60
2015	0.61	0.63	0.60
2014	0.59	0.63	0.60
2013	0.57	0.64	0.59
2012	0.58	0.64	0.58
2011	0.63	0.64	0.60
2010	0.60	0.64	0.59
2009	0.61	0.64	0.61
2008	0.61	0.64	0.60
2007	0.60	0.64	0.58
2006	0.54	0.64	0.57
2005	0.46	0.64	0.47
2004	0.51	0.64	0.51
2003	0.49	0.64	0.50

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≥90%

90%

View Data

Graduation Rate Comparison Over Years (2012-2023)
Year	Calvin Nelms High School	Texas	Calvin Nelms Charter Schools
2023	90%	90%
2022	90%	90%	90%
2021	90%	89%	90%
2019	90%	89%	90%
2018	80%	89%	80%
2017	90%	89%	90%
2016	90%	89%	90%
2015	84%	89%	84%
2014	74%	88%	64%
2013	64%	88%	67%
2012	54%	88%	62%

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Eligible for

28%

57%

View Data

Free Lunch Eligibility Comparison Over Years (2003-2023)
Year	Calvin Nelms High School	Texas	Calvin Nelms Charter Schools
2023	28%	57%	34%
2022	43%	57%	46%
2021	21%	56%	26%
2020	42%	56%	46%
2019	42%	56%	46%
2018	27%	53%	33%
2017	27%	53%	33%
2016	18%	53%	27%
2015	14%	52%	17%
2014	19%	53%	24%
2013	19%	53%	22%
2012	20%	44%	18%
2011	26%	44%	24%
2010	22%	43%	23%
2009	15%	40%	14%
2008	15%	39%	13%
2007	26%	39%	22%
2006	46%	40%	38%
2005	25%	39%	34%
2004	26%	39%	26%
2003	21%	39%	20%

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Eligible for

11%

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2009-2023)
Year	Calvin Nelms High School	Texas	Calvin Nelms Charter Schools
2023	11%	5%	11%
2018	10%	6%	10%
2017	10%	6%	10%
2016	9%	6%	9%
2015	7%	6%	10%
2014	6%	7%	7%
2013	6%	7%	7%
2012	5%	7%	4%
2011	4%	7%	3%
2010	9%	8%	8%
2009	7%	8%	8%

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School Statewide Testing

School District Name

Calvin Nelms Charter Schools

Source: National Center for Education Statistics (NCES), TX Dept. of Education

Profile last updated: 02/09/2025

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?

168 students attend Calvin Nelms High School.

What is the racial composition of the student body?

61% of Calvin Nelms High School students are Hispanic, 18% of students are White, 12% of students are Black, 5% 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 17:1, 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 (2025-26)

School Type: Charter School
Grades: 9-12
Enrollment: 168 students
Student-Teacher Ratio: 17:1
Minority Enrollment: 82%
: ≥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