Excellent
#969 of 8,552 schools in TX
Top 11% in state
Calvin Nelms H S
High School · CALVIN NELMS CHARTER SCHOOLS
20625 CLAY RD, Katy, TX 77449
Enrollment
168
Student-Teacher
16.8:1
Score
8.3
Grades
9th – 12th
Enrollment
168
Student-Teacher
16.8:1
Score
8.3
Grades
9th – 12th
Data vintage
2022-23
Data vintage2022-23
How this school compares
Texas schools
#969 of 8,552
In Katy
#35 of 86
public schools
In district
#1 of 2
CALVIN NELMS CHARTER SCHOOLS
Academic growth
9.6 / 10
Excellent
Shortlisting around Calvin Nelms H S?
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Calvin Nelms H S
High School in Katy · grades 9th – 12th. Start here, then compare fit against nearby and district options.
Calvin Nelms Middle
0.0 mi away. Use as a geographic alternative in the same move search.
Robinson EL
0.6 mi away. Use as a geographic alternative in the same move search.
About Calvin Nelms H S
Calvin Nelms H S is a public high school in Katy, TX, part of CALVIN NELMS CHARTER SCHOOLS. Calvin Nelms H S serves approximately 168 students, and covers grades 9th-12th, and has a 16.8:1 student-teacher ratio. Calvin Nelms H S has a current MySchoolScout rating of 8.3 out of 10 and ranks #969 of 8,552 schools in TX.
Structured state assessment records for Calvin Nelms H S show 70% math proficiency (multi-year average, 2009-2024) and 79% reading/ELA proficiency (multi-year average, 2009-2024).
- This school 8.3 · Excellent
- TX avg 6.3
What Parents Should Know
At 168 students, Calvin Nelms H S is on the smaller side. That usually buys more individual attention and teachers who know every kid by name, with the trade-off of fewer electives and extracurriculars than a larger school can staff. Ask what activities it actually offers.
Calvin Nelms H S is a charter school: publicly funded, but run with more independence than a traditional district school. Many charters are built around a specific model or focus, so it's worth understanding this one's mission, how enrollment works, and how it differs from the district schools nearby.
Score Breakdown
Full Profile · 4/4 metricsView breakdown
View breakdown
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Calvin Nelms H S — Students at Calvin Nelms H S score 72% proficient, which is below what's typical for similar communities (expected: 73%).
Test Scores TX STAAR (2023-24)
Based on 28 test records from TX state assessments. About our data
Proficiency Trend
→ StableAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 9.6/10.
How Calvin Nelms H S Compares
See how Calvin Nelms H S performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more
Location
20625 CLAY RD, Katy, TX 77449
Nearby Alternatives
Families considering Calvin Nelms H S may also want to explore other high schools in the area. WESTSIDE BAPTIST ACADEMY (rated 8.3/10, 0.7 miles away), with a very similar rating. Another option is MCROBERTS EL (rated 7.3/10, 0.9 miles away), a more accessible option. Additionally, CALVIN NELMS MIDDLE (rated 7.0/10), a more accessible option. For more schools in Katy, see our Katy schools guide .
Nearby Schools
20 within 2.4 mi| School | Distance | Rating |
|---|---|---|
| CALVIN NELMS MIDDLE Katy | 0.0 mi | 7.0 |
| ROBINSON EL Katy | 0.6 mi | 5.3 |
| T H MCDONALD J H Katy | 0.7 mi | 7.0 |
| WESTSIDE BAPTIST ACADEMY Katy | 0.7 mi | 8.3 |
| LORAINE T GOLBOW EL Katy | 0.8 mi | 6.8 |
| MCROBERTS EL Katy | 0.9 mi | 7.3 |
| JACK & SHARON RHOADS EL Katy | 1.1 mi | 5.1 |
| MORTON RANCH J H Katy | 1.5 mi | 6.0 |
| FRANZ EL Katy | 1.6 mi | 5.8 |
| URSULA STEPHENS EL Katy | 1.6 mi | 6.7 |
| MORTON RANCH EL Katy | 1.6 mi | 6.4 |
| THORNTON MIDDLE Katy | 1.7 mi | 6.0 |
| CARDIFF J H Katy | 1.6 mi | 6.4 |
| MORTON RANCH H S Katy | 1.9 mi | 6.4 |
| SHERIDAN EL Katy | 1.8 mi | 3.8 |
| SUNDOWN EL Katy | 1.9 mi | 5.1 |
| BRITISH INTERNATIONAL SCHOOL OF HOUSTON Katy | 2.1 mi | 6.3 |
| EMERY EL Katy | 2.1 mi | 3.4 |
| HEMMENWAY EL Katy | 2.3 mi | 5.1 |
| MAYDE CREEK J H Houston | 2.4 mi | 6.6 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 77449 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$85,934
Median Home Value
$236,400
Median Rent
$1,755/mo
Population
123,042
College Educated
28.4%
Homeownership
70.5%
Avg Commute
35.6 min
Poverty Rate
11%
Median Age
34.3
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| BOLES H S Quinlan, TX | 8.3 |
| CLARENDON H S Clarendon, TX | 8.3 |
| FALLS CITY H S Falls City, TX | 8.3 |
| OLNEY H S Olney, TX | 8.3 |
| RAYBURN H S Ivanhoe, TX | 8.3 |
| WEIMAR H S Weimar, TX | 8.3 |
Frequently Asked Questions
Common questions about Calvin Nelms H S
What grades does Calvin Nelms H S serve?
Calvin Nelms H S serves students in grades 9th through 12th.
How many students attend Calvin Nelms H S?
Calvin Nelms H S has an enrollment of approximately 168 students.
What is the student-teacher ratio at Calvin Nelms H S?
The student-teacher ratio at Calvin Nelms H S is 16.8:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Calvin Nelms H S rank in TX?
Calvin Nelms H S ranks #969 of 8,552 schools in TX.
What is Calvin Nelms H S's MySchoolScout rating?
Calvin Nelms H S has a current MySchoolScout rating of 8.3 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Calvin Nelms H S?
Based on loaded state assessment records, Calvin Nelms H S has 70% math proficiency (multi-year average, 2009-2024) and 79% reading/ELA proficiency (multi-year average, 2009-2024).
Is Calvin Nelms H S a charter school?
Yes, Calvin Nelms H S is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.
Is Calvin Nelms H S a Title I school?
No, Calvin Nelms H S is not currently a Title I school.
Neighborhood Context
Powered by 
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 168
- Student-Teacher Ratio
- 16.8:1
- Teachers (FTE)
- 10
- Type
- regular
- Setting
- Large Suburb
- County
- Harris County
- Chronic Absenteeism (SY 2022-23)
- 6.5%
- Phone
- (281) 398-8031
- 4-Year Graduation
- 90%+
Resources & Links
District
CALVIN NELMS CHARTER SCHOOLS- District Enrollment
- 324
- Schools in District
- 2
- Per-Pupil Spending
- $9,891
- District Rank
- #1 of 2
Other Schools in This District
How we rate schools
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