Excellent
#326 of 2,221 schools in MO
Top 15% 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
8.0
Grades
Kindergarten – 5th
Enrollment
838
Student-Teacher
13.1:1
Score
8.0
Grades
Kindergarten – 5th
Data vintage
2022-23
Data vintage2022-23
How this school compares
Missouri schools
#326 of 2,221
In St. Charles
#8 of 33
public schools
In district
#3 of 21
FRANCIS HOWELL R-III
Academic performance
8.8 / 10
Excellent
Shortlisting around Castlio Elem.?
Use this profile as one decision point, then compare nearby options, source confidence, and commute fit before picking a neighborhood around it.
Shortlist starter
Start with these real page-level signals, then use the full table and map below.
Castlio Elem.
Elementary School in St. Charles · grades Kindergarten – 5th. Start here, then compare fit against nearby and district options.
Zion Lutheran School
1.3 mi away. Use as a geographic alternative in the same move search.
Central Elem.
1.4 mi away. Use as a geographic alternative in the same move search.
About Castlio Elem.
Castlio Elem. is a public elementary school in St. Charles, MO, part of FRANCIS HOWELL R-III. Castlio Elem. serves approximately 838 students, and covers grades Kindergarten-5th, and has a 13.1:1 student-teacher ratio.
Castlio Elem. has a current MySchoolScout rating of 8.0 out of 10 and ranks #326 of 2,221 schools in MO. Structured state assessment records for Castlio Elem. show 67% math proficiency (multi-year average, 2009-2025) and 68% reading/ELA proficiency (multi-year average, 2009-2025).
- This school 8.0 · Excellent
- District avg 7.2
- MO avg 6.4
Score Breakdown
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Castlio Elem. — Students at Castlio Elem. score 64% proficient, which is above what's typical for similar communities (expected: 58%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
12.3%
Students qualifying for federal meal assistance
Test Scores MO MAP (2024-25)
Based on 40 test records from MO 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: 7.6/10.
How Castlio Elem. Compares
See how Castlio Elem. 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
1020 DINGLEDINE RD, St. Charles, MO 63304
Nearby Alternatives
Families considering Castlio Elem. may also want to explore other elementary schools in the area. WARREN ELEM. (rated 8.4/10, 3.8 miles away, in nearby St. Peters), which scores slightly higher. Another option is BECKY-DAVID ELEM. (rated 7.9/10, 2.2 miles away), with a very similar rating. Additionally, CENTRAL ELEM. (rated 7.2/10, 1.4 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 | 7.2 |
| HOLLENBECK MIDDLE St. Charles | 1.4 mi | 5.9 |
| EARLY CHILD FAMILY EDUC. CTR. St. Charles | 1.5 mi | 4.0 |
| FAIRMOUNT ELEM. St. Peters | 2.5 mi | 4.8 |
| BARNWELL MIDDLE St. Charles | 2.1 mi | 5.5 |
| BECKY-DAVID ELEM. St. Charles | 2.2 mi | 7.9 |
| CHRISTIAN SCHOOL DISTRICT St. Peters | 3.4 mi | 5.8 |
| HENDERSON ELEM. St. Charles | 3.2 mi | 5.7 |
| FRANCIS HOWELL CENTRAL HIGH St. Charles | 2.9 mi | 5.2 |
| CHILDRENS EDU-CARE CENTER INC. St. Peters | 3.4 mi | — |
| FRANCIS HOWELL NORTH HIGH St. Charles | 3.2 mi | 7.1 |
| SAEGER MIDDLE St. Charles | 2.9 mi | 5.9 |
| EARLY CHILD. FAMILY EDUC CTR. St. Charles | 3.3 mi | 3.9 |
| ST JOSEPH SCHOOL St. Charles | 3.1 mi | 4.3 |
| DR. BERNARD J. DUBRAY MIDDLE St. Peters | 3.9 mi | 6.5 |
| HAWTHORN ELEM. St. Peters | 4.1 mi | 6.2 |
| FT. ZUMWALT EAST HIGH St. Peters | 4.3 mi | 7.4 |
| LUTHERAN HIGH SCHOOL OF ST CHARLES COUNTY St. Peters | 4.4 mi | 5.2 |
| WARREN ELEM. St. Peters | 3.8 mi | 8.4 |
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
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| FESTUS ELEM. Festus, MO | 8.0 |
| LAKEVIEW ELEMENTARY Wentzville, MO | 8.0 |
| BECKY-DAVID ELEM. St. Charles, MO | 7.9 |
| BEULAH RALPH ELEMENTARY Columbia, MO | 7.9 |
| CHAPEL HILL ELEMENTARY Gladstone, MO | 8.1 |
| COMPASS ELEMENTARY Platte City, MO | 8.1 |
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. ranks #326 of 2,221 schools in MO.
What is Castlio Elem.'s MySchoolScout rating?
Castlio Elem. has a current MySchoolScout rating of 8.0 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 Castlio Elem.?
Based on loaded state assessment records, Castlio Elem. has 67% math proficiency (multi-year average, 2009-2025) and 68% reading/ELA proficiency (multi-year average, 2009-2025).
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.
Neighborhood Context
Powered by 
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
- Chronic Absenteeism (SY 2022-23)
- 11.8%
- Phone
- (636) 851-4300
Resources & Links
District
FRANCIS HOWELL R-III- District Enrollment
- 17,241
- Schools in District
- 23
- Per-Pupil Spending
- $12,462
- District Rank
- #3 of 21
Other Schools in This District
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