High school · Grades 9–12 · Calvin Nelms Charter Schools
TEA rating B · score 89 of 100 (2025) · 183 students
Address: 20625 Clay Rd, Katy, TX 77449
Phone: (281) 398-8031 ext. 101
Website: cnchs.net (opens in a new tab)
Data as of: TEA ratings 2025 · school directory September 14, 2026 · homes for sale live from our MLS feed
We show what the Texas Education Agency and the schools published as of our last update (September 14, 2026), and we check TEA for rating and directory updates monthly. Attendance zones, ratings and school assignments can change, so check with Calvin Nelms Charter Schools (opens in a new tab) for the most current information.
Homes for sale
Scope: homes within 5 miles of Calvin Nelms High School. Charter schools enroll by application, not by address, so no home is zoned to them.
$290,000
5735 Clerkenwell Drive
Houston · MLS #8603888
$264,900
20910 Hall Colony Court
Katy · MLS #32021237
$230,000
18523 Fair Grange Lane
Cypress · MLS #40262427
$375,000
607 Bondi Court
Houston · MLS #84149355
$206,500
22111 Pearl Lake Drive
Katy · MLS #70301978
$450,000
4406 Clara Rose Lane
Katy · MLS #2133618
$387,140
22623 Alamo Ridge Road
Katy · MLS #83706483
$373,340
22606 Alamo Ridge Road
Katy · MLS #52807252
$340,000
3202 Cabin Wood Way
Houston · MLS #70971712
$303,999
22302 Red River Drive
Katy · MLS #10874514
$200,000
7102 Village Lake Dr
Cypress · MLS #13528395
$449,000
7319 Perching Hawk Trail
Katy · MLS #26945970
$305,000
22631 Theodoli Drive
Katy · MLS #2344043
$314,900
3619 Landon Park Drive
Katy · MLS #27236299
$257,000
5531 Ginger Bell Drive
Houston · MLS #89088714
$355,000
22722 Busalla Trail
Katy · MLS #63038404
$499,000
23327 Tirino Shores Drive
Katy · MLS #40009365
$235,000
21015 Sun Creek Drive
Katy · MLS #40407783
$307,000
22906 Ginosa Trail
Katy · MLS #94820307
$324,900
1006 Rock Canyon Drive
Katy · MLS #37593248
$279,000
5219 Daintree River Court
Katy · MLS #83985223
$290,000
21623 Cypress Maple Drive
Cypress · MLS #5380396
$285,000
830 Sierra Lake Drive
Katy · MLS #77143103
$475,000
20919 Montana Bend Lane
Cypress · MLS #15938550
Active listings from our MLS feed. Listing information is provided in part by the Houston Association of REALTORS®.
The school
B
TEA rating 2025
Score 89 of 100
183
Students
Texas Education Agency, 2024-25
17.6:1
Students per teacher
9–12
Grades served
Teachers average 16.0 years of experience. Average teacher salary $67,555. Four-year graduation rate 100%.
| Year | Rating | Score |
|---|---|---|
| 2025 | B | 89 |
| 2024 | B | 89 |
| 2023 | B | 87 |
| 2022 | A | 93 |
| 2021 | NRNot Rated: Declared State of Disaster | — |
| 2020 | NRNot Rated: Declared State of Disaster | — |
| 2019 | A | 91 |
| 2018 | NRMet Standard | 96 |
Final ratings only (preliminary ratings are not shown). Source: Texas Education Agency.
Principal: Mr Timothy Starnes (TEA AskTED directory).
Local market
Scope: homes within 5 miles of Calvin Nelms High School. Sale figures appear only where at least 5 homes sold in the period; averages and dollar volume are for signed-in clients.
1,428 homes are for sale within 5 miles; at the last six months' sales pace that is 5.0 months of inventory. Homes that sold here in the last six months had a median price of $305,000.
Each figure is compared with the same period last year. Where last year's data isn't in our feed yet, you'll see "—".
$305,000
Median sale
homes sold, last 30 days
-3% YoY
a year ago: $315,000
242
Homes sold
last 30 days
-4% YoY
a year ago: 252
90
Avg days on mkt
homes sold, last 30 days
+29% YoY
a year ago: 70
$148
Price / sqft
homes sold, last 30 days
-3% YoY
a year ago: $153
469
New listings
last 30 days
-26% YoY
a year ago: 634
265
Went pending
last 30 days
+11% YoY
a year ago: 239
These tiles cover the last 30 days. The median sale price at the top covers the last 6 months, and the days-on-market figure in the read above is for homes for sale right now, so the numbers differ.
What's nearby
Scope: 724 places mapped within 5 miles of the campus.
Toggle a category on or off.
Amenities mapped near Calvin Nelms High School: 304 restaurants, 74 gas stations, 63 grocery stores, 62 schools, 44 places of worship, 38 coffee shops, 38 parks & trails, 26 banks, 18 pharmacies, 14 daycares, 12 gyms & fitness, 7 post offices, 6 veterinary, 6 hospitals, 6 emergency rooms, 4 police stations, 2 libraries.
Flood, fire & weather
Scope: homes within 5 miles of Calvin Nelms High School. Flood claims are counted by ZIP code; the fire station is measured from the campus.
1%
Homes for sale in the FEMA high-risk flood area
Special Flood Hazard Area, current FEMA maps
X
FEMA flood zone at the campus
Outside the high-risk area
468
Flood-insurance claims on record
7 ZIP codes, 1994–2024; 293 from Harvey (2017)
0.8 mi
Nearest fire station
Fire Station (straight line)
72
Days a year at 95°F or hotter
2016–2025 average
Sources: FEMA National Flood Hazard Layer; FEMA NFIP claims; Texas fire station locations. Flood risk is address-specific.
Crime & safety
Scope: The agency that patrols the campus address. Figures cover that agency's whole service area, not this neighborhood.
Incidents per 1,000 residents per year, 2025-06 to 2026-05 (12 months). Across 61 agencies in our six counties the middle value is 14.2.
Jurisdiction-level only: the agency that patrols this address does not publish incident-level open data, so figures cover its whole service area. Source: FBI Crime Data Explorer.
Utilities & internet
Scope: 65 census tracts touching this area. FCC data is reported by census tract, not by address.
100%
Tracts with fiber service
8,000 Mbps
Fastest advertised download
15
Home internet providers
| Provider | Technology | Max download |
|---|---|---|
| AT&T | Fiber to the Premises | 5,000 Mbps |
| Xfinity | Coaxial Cable | 2,000 Mbps |
| Spectrum | Coaxial Cable | 1,000 Mbps |
| Verizon | Licensed Fixed Wireless | 300 Mbps |
| Starlink | NGSO Satellite | 280 Mbps |
| Viasat Inc | GSO Satellite | 100 Mbps |
| AT&T | Copper | 100 Mbps |
| AT&T | Licensed Fixed Wireless | 100 Mbps |
Source: FCC Broadband Data Collection.
Drive times
Scope: Averaged across 216 homes for sale within 5 miles; traffic-aware, from our own routing engine.
37min
Downtown Houston
33min
The Galleria
46min
Bush / IAH Airport
44min
Texas Medical Center
56min
Hobby Airport
Keep exploring
Feeder patterns (which elementary feeds which middle school) are not published in the data we hold.
Good to know
I'll help you check the assigned schools, the flood exposure and the real costs of living here before you decide.
Allen Markel, REALTOR® · Texas Premier Realty · TREC #0658294
School data: Texas Education Agency (ratings, TAPR, AskTED). Market, flood, amenity, internet and crime data: Allen Markel · Texas Premier Realty research from public sources and our MLS feed.
