Average
#846 of 2,216 schools in MO
Top 38% in state
Castlio Elem.
Elementary School · FRANCIS HOWELL R-III
1020 DINGLEDINE RD, St. Charles, MO 63304
Enrollment
838
Student-Teacher
13.1:1
Score
6.8
Grades
Kindergarten – 5th
Enrollment
838
Student-Teacher
13.1:1
Score
6.8
Grades
Kindergarten – 5th
Updated
2022-23
Updated 2022-23
How this school compares
In St. Charles
#13 of 27
public schools
Missouri elementary schools
#460 of 1,202
In district
#7 of 21
FRANCIS HOWELL R-III
Academic performance
8.9 / 10
Exceptional
About Castlio Elem.
Castlio Elementary serves 838 students in kindergarten through fifth grade in St. Charles, Missouri, earning recognition as one of the top-performing elementary schools in the state. With a MySchoolScout rating of 7.8 out of 10 and ranking 160th out of 2,234 Missouri schools, Castlio places in the 93rd percentile statewide for academic excellence.
The school maintains a favorable student-teacher ratio of 13.1 to 1 with 64 full-time equivalent teachers supporting student learning. Academic performance is strong across core subjects, with 63% of students achieving proficiency or above in English Language Arts and Reading, and 60% reaching proficiency in Mathematics. These results reflect the school's commitment to providing quality education and help explain its impressive 9.2 out of 10 academic score.
Castlio Elementary draws families from an affluent community where the median household income reaches $111,114 and nearly half of adults hold bachelor's degrees or higher. The surrounding neighborhood features a low poverty rate of just 3.5% and median home values of $300,700, creating a stable environment that supports educational achievement. Located on Dingledine Road in this thriving suburban St.
Charles County community, Castlio Elementary benefits from being part of a well-established residential area that values education and family life.
Score Breakdown
Full Profile · 3/3 metricsView breakdown
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Data not available for this school
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Castlio Elem. — Students at Castlio Elem. score 62% proficient, which is above what's typical for similar communities (expected: 55%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
12.3%
Students qualifying for federal meal assistance
Test Scores MO EDFACTS (2021-22)
Based on 6 test records from MO state assessments. About our data
Proficiency Trend
↓ DecliningAverage 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: 5.6/10.
How Castlio Elem. Compares
See how Castlio Elem. performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has declined from 67% (2019) to 60% (2022). Reading/ELA proficiency has declined from 69% (2019) to 63% (2022).
Location
1020 DINGLEDINE RD, St. Charles, MO 63304
Nearby Alternatives
Families considering Castlio Elem. may also want to explore other elementary schools in the area. HENDERSON ELEM. (rated 7.8/10, 3.2 miles away), which scores slightly higher. Another option is HAWTHORN ELEM. (rated 6.5/10, 4.1 miles away, in nearby St. Peters), with a very similar rating. Additionally, BECKY-DAVID ELEM. (rated 6.4/10, 2.2 miles away), with a comparable rating. For more schools in St. Charles, see our St. Charles schools guide .
Nearby Schools
20 within 3.8 mi| School | Distance | Rating |
|---|---|---|
| ZION LUTHERAN SCHOOL St. Charles | 1.3 mi | 5.4 |
| CENTRAL ELEM. St. Charles | 1.4 mi | 5.8 |
| HOLLENBECK MIDDLE St. Charles | 1.4 mi | 6.4 |
| EARLY CHILD FAMILY EDUC. CTR. St. Charles | 1.5 mi | 6.1 |
| FAIRMOUNT ELEM. St. Peters | 2.5 mi | 6.1 |
| BARNWELL MIDDLE St. Charles | 2.1 mi | 7.4 |
| BECKY-DAVID ELEM. St. Charles | 2.2 mi | 6.4 |
| CHRISTIAN SCHOOL DISTRICT St. Peters | 3.4 mi | 5.8 |
| HENDERSON ELEM. St. Charles | 3.2 mi | 7.8 |
| FRANCIS HOWELL CENTRAL HIGH St. Charles | 2.9 mi | 7.7 |
| CHILDRENS EDU-CARE CENTER INC. St. Peters | 3.4 mi | — |
| FRANCIS HOWELL NORTH HIGH St. Charles | 3.2 mi | 6.6 |
| SAEGER MIDDLE St. Charles | 2.9 mi | 6.5 |
| EARLY CHILD. FAMILY EDUC CTR. St. Charles | 3.3 mi | 6.0 |
| ST JOSEPH SCHOOL St. Charles | 3.1 mi | 4.3 |
| DR. BERNARD J. DUBRAY MIDDLE St. Peters | 3.9 mi | 8.2 |
| HAWTHORN ELEM. St. Peters | 4.1 mi | 6.5 |
| FT. ZUMWALT EAST HIGH St. Peters | 4.3 mi | 8.5 |
| LUTHERAN HIGH SCHOOL OF ST CHARLES COUNTY St. Peters | 4.4 mi | 5.2 |
| WARREN ELEM. St. Peters | 3.8 mi | 6.3 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 63304 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$114,124
Median Home Value
$331,300
Median Rent
$1,618/mo
Population
43,389
College Educated
48%
Homeownership
88.4%
Avg Commute
24.9 min
Poverty Rate
4%
Median Age
41.3
Community Profile
The community surrounding Castlio Elem. has a median household income of $114,124. It is a well-educated community where 48% of adults hold a bachelor's degree or higher. The median home value in the area is $331,300, with a median rent of $1,618/month. The local poverty rate of 4.0% is relatively low. The average commute for residents is 25 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| KIRKSVILLE PRIMARY Kirksville, MO | 6.8 |
| MARTIN CITY ELEM. Kansas City, MO | 6.8 |
| SHOAL CREEK ELEM. Kansas City, MO | 6.8 |
| SOUTH ELEM. Ozark, MO | 6.8 |
| FRONTIER SCHOOL OF INNOVATION Kansas City, MO | 6.7 |
| KC INTERNATIONAL-WALLACE Kansas City, MO | 6.7 |
Frequently Asked Questions
Common questions about Castlio Elem.
What grades does Castlio Elem. serve?
Castlio Elem. serves students in grades Kindergarten through 5th.
How many students attend Castlio Elem.?
Castlio Elem. has an enrollment of approximately 838 students.
What is the student-teacher ratio at Castlio Elem.?
The student-teacher ratio at Castlio Elem. is 13.1:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Castlio Elem. rank in MO?
Castlio Elem. is ranked #846 out of 2,216 schools in MO.
What is Castlio Elem.'s MySchoolScout rating?
Castlio Elem. has a composite rating of 6.8 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 Castlio Elem.?
Based on the most recent state assessment data, Castlio Elem. has 62.0% math proficiency and 65.7% reading/ELA proficiency.
Is Castlio Elem. a charter school?
No, Castlio Elem. is not a charter school. It is a traditional public school operated by the local school district.
Is Castlio Elem. a Title I school?
No, Castlio Elem. is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Castlio Elem.?
12.3% of students at Castlio Elem. qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Explore More Schools
Neighborhood Context
- City Safety
- Elevated (1,024/100K)
FBI UCR 2024. City-level (St. Charles). Data >1 year old.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- Kindergarten – 5th
- Enrollment
- 838
- Student-Teacher Ratio
- 13.1:1
- Teachers (FTE)
- 64
- Free/Reduced Lunch
- 12.3%
- Type
- regular
- Setting
- Large Suburb
- County
- St. Charles County
- Phone
- (636) 851-4300
- Data Year
- 2023–2024
Resources & Links
District
FRANCIS HOWELL R-III- District Enrollment
- 17,241
- Schools in District
- 23
- Per-Pupil Spending
- $12,462
- District Rank
- #7 of 21
Other Schools in This District
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 methodologyRelated reading
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