Enrollment
160
Middle
DISTRICT 172 · STATE 643
SCHOOL COMMUNITY·CALVIN NELMS CHARTER SCHOOLS·NCES 480012409258
Calvin Nelms Middle School
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, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 6 | 58 | 36% |
| Grade 7 | 58 | 36% |
| Grade 8 | 44 | 28% |
Student demographics
57%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 58% · STATE 63% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). 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 School→Calvin Nelms High School
Based on grade levels within CALVIN NELMS CHARTER SCHOOLS. Attendance zones can vary; confirm enrollment with the district.
Test scores
STAAR 2025-26 . % Meets Grade Level or AboveReading
70.0%
TX avg 54.5% . +11.0pp since 2020
Mathematics
56.0%
TX avg 45.3% . +18.0pp since 2020
What this means: On the STAAR, Texas's statewide test, about 70 of every 100 students at this school read at grade level and about 56 of 100 do math at grade level. Across all Texas schools, those numbers are about 55 and 45. Reading scores are up about 11 points since 2020, while math scores are up about 18 points.
Performance levels, 2025-26
| Subject | Masters Grade Level | Meets Grade Level | Approaches Grade Level | Did Not Meet Grade Level |
|---|---|---|---|---|
| Reading | 37.0% | 33.0% | 24.0% | 6.0% |
| Mathematics | 27.0% | 29.0% | 28.0% | 16.0% |
Share of tested students at each STAAR level. Each student counts in one level, so a row adds to about 100%.
STAAR results by year
| School year | Reading | Mathematics |
|---|---|---|
| 2025-26 | 70.0% | 56.0% |
| 2024-25 | 67.0% | 56.0% |
| 2023-24 | 77.0% | 62.0% |
| 2022-23 | 60.0% | 70.0% |
| 2021-22 | 55.0% | 48.0% |
| 2020-21 | 59.0% | 38.0% |
% Meets Grade Level or Above, all students and all tested grades.
Source: STAAR. All students, all grades. See all years and grades →
Where Calvin Nelms Middle School ranks
Among middle schools| Measure | This school | In Texas | In Harris County |
|---|---|---|---|
| Math proficiency ranked highest first | 56.0% | #377 of 1,670 ▼ 24 | #43 of 219 ▼ 7 |
| Reading proficiency ranked highest first | 70.0% | #277 of 1,670 ▲ 59 | #30 of 219 ▲ 4 |
| 3-year test score change ranked biggest drop first | -2.0pp | #168 of 1,570 | #18 of 216 |
| Enrollment ranked largest first | 160 | #1,603 of 1,749 | #217 of 227 |
Ranked against other public middle schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
160
+25 (+19%) vs 2020
+214% since 2010-11, when it was 51
Student : Teacher
21.1:1
was 19.3:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 160 | 7.6 | 21.1:1 | N/A |
| 2023-24 | 156 | 7.9 | 19.7:1 | N/A |
| 2022-23 | 144 | 7.7 | 18.6:1 | N/A |
| 2020-21 | 135 | 7 | 19.3:1 | 31% (42) |
| 2017-18 | 147 | 7.3 | 20.0:1 | 53% (78) |
| 2015-16 | 142 | 8 | 17.8:1 | 49% (70) |
| 2010-11 | 51 | 4 | 12.8:1 | 47% (24) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Calvin Nelms Middle School.
Since 2017-18: students up 9% (147 to 160); teachers up 4% (7.3 to 7.6).
About Calvin Nelms Middle School
Calvin Nelms Middle School is a small middle school found in KATY, Texas. The school's 160 students are in grades 6 through 8. Statewide, middle schools in Texas average about 643 students each.
The district, CALVIN NELMS CHARTER SCHOOLS, operates 2 schools serving 343 students.
Calvin Nelms Middle School's enrollment is 62% Hispanic. Other groups make up 15% Black, 12% White, 6% Asian, and 4% multiracial. County-wide, 44% of Harris County residents are Hispanic. Calvin Nelms Middle School has a diversity index of 57%, compared with 70% for all US public school students.
The school reports 7.6 full-time-equivalent teachers, which works out to about 21.1 students per teacher. The 14.4:1 average for middle schools in Texas is lower than this school's figure.
Harris County census figures show that median household income is about $74,983, 34% of adults hold a bachelor's degree or higher, and about 13% of residents live below the federal poverty line. Calvin Nelms Middle School is among the 1,205 public schools in Harris County.
The school nearest to Calvin Nelms Middle School is Calvin Nelms High School, at a distance of less than a tenth of a mile. Within five miles of Calvin Nelms Middle School, there are at least 8 other public schools.
The NCES locale for Calvin Nelms Middle School is Suburb: Large, which covers schools in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more. NCES lists Calvin Nelms Middle School as a charter school.
Enrollment was 135 in 2020-21 and 160 in 2024-25, a rise of 25 students. In 2020-21, the student-to-teacher ratio was 19.3:1; by 2024-25 it was 21.1:1.
Conversations here can range across sports schedules, lunch menus, and spirit week. Reviews and ratings from people who know the school are welcome.
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 CALVIN NELMS CHARTER SCHOOLS
- Calvin Nelms High SchoolHigh · 183 students
Other schools in KATY
- Seven Lakes High SchoolHigh · 3,773 students
- Cinco Ranch High SchoolHigh · 3,740 students
- Katy High SchoolHigh · 3,543 students
- Paetow High SchoolHigh · 3,447 students
- Taylor High SchoolHigh · 3,384 students
- Jordan High SchoolHigh · 3,330 students
Nearby schools
- Calvin Nelms High School0.0 mi · 183
- Brosnahan Elementary School0.6 mi · 1,035
- Robinson Elementary School0.6 mi · 908
- T H McDonald Junior High School0.7 mi · 966
- Loraine T Golbow Elementary School0.8 mi · 640
- McRoberts Elementary School0.9 mi · 864
Frequently asked questions
About Calvin Nelms Middle SchoolHow many students attend Calvin Nelms Middle School?
Calvin Nelms Middle School enrolls approximately 160 students in grades 06-08.
What grades does Calvin Nelms Middle School serve?
Calvin Nelms Middle School serves grades 06-08.
How many students per teacher at Calvin Nelms Middle School?
Approximately 21.1:1 students per teacher at Calvin Nelms Middle School.
What is the student diversity at Calvin Nelms Middle School?
Student demographics at Calvin Nelms Middle School are roughly 12% White, 62% Hispanic, 15% Black, 6% Asian, 4% Two or more.
Who oversees Calvin Nelms Middle School?
Calvin Nelms Middle School 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.