Enrollment
160
Middle
DISTRICT 172 · STATE 643
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
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
Student demographics
Student head counts by race/ethnicity from federal NCES enrollment data. Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
School pathway
Students here typically continue to
CALVIN NELMS MIDDLE→CALVIN NELMS H S
Based on grade levels within CALVIN NELMS CHARTER SCHOOLS. Attendance zones can vary; confirm enrollment with the district.
Test scores
STAAR 2023-24 . % Meets Grade Level or AboveReading
77.0%
TX avg 51.8% . +18.0pp since 2020
Mathematics
62.0%
TX avg 42.0% . +24.0pp since 2020
What this means: On the STAAR, Texas's statewide test, about 77 of every 100 students at this school read at grade level and about 62 of 100 do math at grade level. Across all Texas schools, those numbers are about 52 and 42. Reading scores are up about 18 points since 2020, while math scores are up about 24 points.
Source: STAAR. All students, all grades. See all years and grades →
7-year change
SY 2017-18 vs SY 2024-25Enrollment
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 profilePopulation
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
Related schools
Other schools in KATY
- SEVEN LAKES H SHigh · 3,773 students
- CINCO RANCH H SHigh · 3,740 students
- KATY H SHigh · 3,543 students
- PAETOW H SHigh · 3,447 students
- TAYLOR H SHigh · 3,384 students
- JORDAN H SHigh · 3,330 students
Nearby schools
- CALVIN NELMS H S0.0 mi · 183
- BROSNAHAN EL0.6 mi · 1,035
- ROBINSON EL0.6 mi · 908
- T H MCDONALD J H0.7 mi · 966
- LORAINE T GOLBOW EL0.8 mi · 640
- MCROBERTS EL0.9 mi · 864
Frequently asked questions
About CALVIN NELMS MIDDLEHow 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.