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Very Good

#98 of 574 schools in SD

Top 17% in state

Castlewood High School - 01

High School · Castlewood School District 28-1

310 E Harry St, Castlewood, SD 57223

Enrollment

106

Student-Teacher

15.1:1

Score

7.8

Grades

9th – 12th

Updated 2022-23

How this school compares

In Castlewood

#1 of 3

public schools

South Dakota high schools

#24 of 156

In district

#1 of 3

Castlewood School District 28-1

Academic growth

9.8 / 10

Exceptional

About Castlewood High School - 01

Castlewood High School - 01 serves 106 students in grades 9-12 in the small community of Castlewood, South Dakota. This public high school demonstrates exceptional academic performance, ranking 55th out of 586 schools statewide and placing in the 91st percentile with a strong MySchoolScout rating of 7.8 out of 10. The school's academic excellence is evident in its test scores, with 75% of students achieving proficient or above levels in both English Language Arts and Mathematics.

With just 7 full-time equivalent teachers, Castlewood High maintains an intimate learning environment with a student-teacher ratio of 15.1 to 1, allowing for personalized attention and strong student-educator relationships. The school serves a stable rural community where the median household income of $83,295 exceeds national averages, and the poverty rate remains remarkably low at just 3.2%. While 23% of local residents hold bachelor's degrees or higher, the community's median home value of $205,600 reflects a solid, established area.

Castlewood High School operates in Hamlin County's remote rural setting, where the ZIP code population of 1,317 creates a close-knit community atmosphere that often characterizes successful small-town schools in South Dakota's agricultural regions.

What Parents Should Know

With an enrollment of 106 students, Castlewood High School - 01 is a smaller school where families often find a close-knit community atmosphere. Smaller settings can mean more individual attention from teachers and staff, though they may offer fewer extracurricular options than larger schools.

Located in a rural area, Castlewood High School - 01 may involve longer commutes for some families. Rural schools often serve as community anchors and may have smaller class sizes, but parents should consider transportation logistics, after-school program availability, and access to specialized services.

Score Breakdown

Full Profile · 4/4 metrics
Student Progress9.8Exceptional25%
Year-over-year improvement in student test scores.
View breakdown
Years of Data3
Annual Change+8.11 pts/yr
Data Period2019–2022
TrendImproving
Academics9.6Exceptional25%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency75%
Reading/ELA Proficiency75%
Overall Proficiency75%
Expected (poverty-adj.)53%
vs. Expected+22.1 pts
Adjusted Percentile95th
College Readiness7.3Very Good30%
Graduation rates, AP course participation, and IB availability.
View breakdown
IB ProgramNo
Resources & Environment4.0Below Average20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio15.1:1
Per-Pupil Spending$9,930

Castlewood High School - 01 — Students at Castlewood High School - 01 score 75% proficient, which is above what's typical for similar communities (expected: 53%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

13.2%

Students qualifying for federal meal assistance

Test Scores SD EDFACTS (2021-22)

Math Proficiency 51.5%
School
State
N/A
ELA Proficiency 71.3%
School
State
N/A

Based on 6 test records from SD state assessments. About our data

Proficiency Trend

↑ Improving

Average proficiency (% at or above grade level) across Math & ELA over time.

2019
Math
30%
ELA
69.5%
2021*
Math
49.5%
ELA
69.5%
2022
Math
75%
ELA
75%

* 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: 9.8/10.

How Castlewood High School - 01 Compares

See how Castlewood High School - 01 performs across key quality dimensions compared to state benchmarks.

Overall Score
7.8/10
83th percentile in SD
Academic
9.6/10
9.6/10
Growth
9.8/10
Above average
Environment
4.0/10
Below average

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
13%
Teaching Staff
15:1 student-teacher ratio
7 teachers

Location

310 E Harry St, Castlewood, SD 57223

Nearby Alternatives

Families considering Castlewood High School - 01 may also want to explore other high schools in the area. GREAT PLAINS LUTHERAN HIGH SCHOOL (rated 7.2/10, 13.7 miles away, in nearby Watertown), with a comparable rating. Another option is Estelline High School - 01 (rated 4.8/10, 12.2 miles away, in nearby Estelline), a more accessible option. Additionally, Watertown High School - 01 (rated 4.2/10, 12.7 miles away, in nearby Watertown), a more accessible option. For more schools in Castlewood, see our Castlewood schools guide .

Nearby Schools

20 within 13.8 mi
School Distance Rating
Castlewood Elementary - 02 Castlewood 0.0 mi 5.4
Castlewood Middle School - 03 Castlewood 0.0 mi 4.4
Claremont Colony Elementary - 04 Castlewood 3.9 mi
POINSETT COLONY ELEMENTARY SCHOOL Estelline 8.5 mi
Roosevelt Elementary - 08 Watertown 12.4 mi 4.4
Watertown High School - 01 Watertown 12.7 mi 4.2
IMACULATE CONCEPTION Watertown 12.6 mi 7.1
Watertown Intermediate School - 13 Watertown 13.1 mi 5.8
Lincoln Elementary - 05 Watertown 13.3 mi 7.8
Estelline Elementary - 02 Estelline 12.1 mi 5.1
Estelline High School - 01 Estelline 12.2 mi 4.8
Estelline Middle School - 03 Estelline 12.2 mi 4.9
Mellette Elementary - 07 Watertown 13.4 mi 7.5
GREAT PLAINS LUTHERAN HIGH SCHOOL Watertown 13.7 mi 7.2
McKinley Elementary - 06 Watertown 13.3 mi 7.6
ST MARTINS LUTHERAN SCHOOL Watertown 13.7 mi 5.4
Watertown Middle School - 02 Watertown 14.0 mi 6.1
WATERTOWN CHRISTIAN SCHOOL Watertown 13.8 mi 6.2
Jefferson Elementary - 09 Watertown 14.2 mi 5.5
Hamlin Middle School - 02 Hayti 13.8 mi 4.7

Neighborhood Census ACS (2019-2023)

Census data for ZIP 57223 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$88,571

Median Home Value

$229,500

Median Rent

$1,096/mo

Population

1,367

College Educated

25.1%

Homeownership

88.3%

Poverty Rate

2.2%

Median Age

36.9

Community Profile

The community surrounding Castlewood High School - 01 has a median household income of $88,571. It is an area where 25% of adults hold a bachelor's degree or higher. The median home value in the area is $229,500, with a median rent of $1,096/month. The local poverty rate of 2.2% is relatively low. Source: U.S. Census ACS 2022 5-Year Estimates.

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
Ethan High School - 01 Ethan, SD 7.8
Frederick High School - 01 Frederick, SD 7.8
Plankinton High School - 01 Plankinton, SD 7.8
Philip High School - 01 Philip, SD 7.7
Ipswich High School - 01 Ipswich, SD 7.9
Burke High School - 01 Burke, SD 8.0

Frequently Asked Questions

Common questions about Castlewood High School - 01

What grades does Castlewood High School - 01 serve?

Castlewood High School - 01 serves students in grades 9th through 12th.

How many students attend Castlewood High School - 01?

Castlewood High School - 01 has an enrollment of approximately 106 students.

What is the student-teacher ratio at Castlewood High School - 01?

The student-teacher ratio at Castlewood High School - 01 is 15.1:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Castlewood High School - 01 rank in SD?

Castlewood High School - 01 is ranked #98 out of 574 schools in SD.

What is Castlewood High School - 01's MySchoolScout rating?

Castlewood High School - 01 has a composite rating of 7.8 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.

What are the test scores at Castlewood High School - 01?

Based on the most recent state assessment data, Castlewood High School - 01 has 51.5% math proficiency and 71.3% reading/ELA proficiency.

Is Castlewood High School - 01 a charter school?

No, Castlewood High School - 01 is not a charter school. It is a traditional public school operated by the local school district.

Is Castlewood High School - 01 a Title I school?

No, Castlewood High School - 01 is not currently a Title I school.

What does the Free & Reduced Lunch percentage mean for Castlewood High School - 01?

13.2% of students at Castlewood High School - 01 qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.

11 schools nearby View map →

Neighborhood Context

Walk Score
20 Car-Dependent
Bike Score
38 Somewhat Bikeable
County Safety
Average (557/100K)

Powered by Walk Score

FBI UCR 2024. County-level only. Data >1 year old.

Quick Facts NCES CCD (SY 2022-23)

Grades
9th – 12th
Enrollment
106
Student-Teacher Ratio
15.1:1
Teachers (FTE)
7
Free/Reduced Lunch
13.2%
Type
regular
Setting
Remote Rural
County
Hamlin County
Data Year
2023–2024

District

Castlewood School District 28-1
District Enrollment
338
Schools in District
4
Per-Pupil Spending
$10,964
District Rank
#1 of 3

How We Rate Schools

Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.

Read our full methodology

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