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SCHOOL COMMUNITY·CALVIN NELMS CHARTER SCHOOLS·NCES 480012409258

CALVIN NELMS MIDDLE

20625 CLAY RD, KATY, TX 77449 · (281) 398-8031 · Harris County
GRADES 06–08MIDDLE21-SUBURBCHARTERREGULAR SCHOOL160 STUDENTS
Enrollment
160
Middle
DISTRICT 172 · STATE 643
Student : Teacher
21.1:1
8 FTE teachers
DISTRICT 19.3:1 · STATE 14.4:1
Free / Reduced Lunch
,
Title I proxy
STATE 65%
Community
0
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Grade 6
58
Grade 7
58
Grade 8
44
Student demographics
White
12%
DISTRICT 14% · STATE 24%
Hispanic
62%
DISTRICT 61% · STATE 54%
Black
15%
DISTRICT 15% · STATE 13%
Asian
6%
DISTRICT 5% · STATE 6%
Two+
4%
DISTRICT 4% · STATE 3%
Native American
n/r
Pacific Islander
n/r
n/r: not reliably reported by NCES for this school. Hispanic, Pacific Islander, and Native American enrollment are systematically under-reported in the source data.
Gender split
Male
49%
Female
51%

Discussions

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Test scores

STAAR 2023-24 . % Meets Grade Level or Above
Reading
77.0%
TX avg 51.8% . +18.0pp since 2020
Mathematics
62.0%
TX avg 42.0% . +24.0pp since 2020
Source: STAAR. All students, all grades. See all years and grades →

7-year change

SY 2017-18 vs SY 2024-25
Enrollment
160
+13 (+9%) vs 2017
Student : Teacher
21.1:1
was 20.0:1
% White
12%
was 16%
% Hispanic
62%
was 56%
% Black
15%
was 17%
% Asian
6%
was 10%
Source: NCES Common Core of Data

About CALVIN NELMS MIDDLE

As a rural-scale middle-grades school in KATY, Texas, CALVIN NELMS MIDDLE hosts 160 students from grades 6 through 8, one of the schools within CALVIN NELMS CHARTER SCHOOLS. By comparison, Texas's public schools average about 643 students each, so CALVIN NELMS MIDDLE sits 75% below that benchmark.

Across the 2 schools in CALVIN NELMS CHARTER SCHOOLS (343 students total), CALVIN NELMS MIDDLE accounts for its share of the district's footprint.

On the student-mix side, CALVIN NELMS MIDDLE lists that 62% of the student body identifies as Hispanic. Other groups include 15% Black, 12% White, 6% Asian, 4% multiracial. That is considerably more Hispanic than the county at large, where the share is closer to 44%.

Looking at school resources, Staff filings list 8 full-time-equivalent teachers, which works out to roughly 21.1:1 students per teacher. The state averages around 14.4:1, so this campus is higher than the state norm typical.

Zooming out to the county, the surrounding county (Harris County) records that median household earnings sit near $74,983, 34% of adults hold a bachelor's degree or higher, and roughly 13% of residents live below the federal poverty line. Across Harris County's 1205 public schools (combined enrollment of about 886,911 students), CALVIN NELMS MIDDLE is one campus in the mix.

CALVIN NELMS H S is the nearest neighboring public school, about 0.0 miles from this campus. Counting just inside five miles, 8 other public schools cluster around CALVIN NELMS MIDDLE.

The campus sits in an outer-ring setting. CALVIN NELMS MIDDLE is a charter school, which puts it inside the public-school system but outside the standard district-managed model.

Over the past 7-year window. Looking back 7 years, enrollment at CALVIN NELMS MIDDLE has edged up 9%, going from 147 students in 2018 to 160 in 2025. Over the same period, the Hispanic share increased from 56% to 62%. Class-load math has grew: from 20.0:1 in 2018 to 21.1:1 in 2025.

On allk12, posts here usually surface around open house dates, ride-share offers, and field-trip permission slips. Contributors range from current parents to recent graduates and teachers.

Harris County at a glance

View full county profile
Population
4,838,303
Census ACS
Median income
$74,983
Household, ACS
Bachelor's+
34%
Adults 25+
Poverty rate
13%
Below federal line
Schools in county
1,205
886,911 students

Quick facts

School name
CALVIN NELMS MIDDLE
District
CALVIN NELMS CHARTER SCHOOLS
Address
20625 CLAY RD, KATY, TX 77449
Phone
(281) 398-8031
County
Harris County
Level
Middle
Grade range
06–08
Total enrollment
160
Teachers (FTE)
8
Student–teacher ratio
21.1:1
Locale
21-Suburb: Large
NCES ID
480012409258
Charter school
Yes
Virtual school
No

Related schools

Other schools in CALVIN NELMS CHARTER SCHOOLS
Other schools in KATY
Nearby schools

Frequently asked questions

About CALVIN NELMS MIDDLE
How many students attend CALVIN NELMS MIDDLE?
CALVIN NELMS MIDDLE enrolls approximately 160 students in grades 06-08.
What grades does CALVIN NELMS MIDDLE serve?
CALVIN NELMS MIDDLE serves grades 06-08.
How many students per teacher at CALVIN NELMS MIDDLE?
Approximately 21.1:1 students per teacher at CALVIN NELMS MIDDLE.
What is the student diversity at CALVIN NELMS MIDDLE?
Student demographics at CALVIN NELMS MIDDLE are roughly 12% White, 62% Hispanic, 15% Black, 6% Asian, 4% Two or more.
Who oversees CALVIN NELMS MIDDLE?
CALVIN NELMS MIDDLE is overseen by CALVIN NELMS CHARTER SCHOOLS in Harris County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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