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If you had an hour of school board time for CASTLIO ELEM., what would you bring up?
Community prompt from u/allk12. Replies below.
Enrollment
847
Elementary
DISTRICT 600 · STATE 315
SCHOOL COMMUNITY·FRANCIS HOWELL R-III·NCES 292895001856
CASTLIO ELEM.
1020 DINGLEDINE RD, ST CHARLES, MO 63304 · (636) 851-4300 · St. Charles County
GRADES KG–05ELEMENTARY21-SUBURBREGULAR SCHOOL847 STUDENTS
Student : Teacher
12.9:1
65 FTE teachers
DISTRICT 13.0:1 · STATE 12.4:1
Free / Reduced Lunch
12%
103 students
DISTRICT 16% · STATE 54%
Community
1
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Kindergarten | 119 | 14% |
| Grade 1 | 129 | 15% |
| Grade 2 | 150 | 18% |
| Grade 3 | 139 | 16% |
| Grade 4 | 160 | 19% |
| Grade 5 | 150 | 18% |
This year's kindergarten class (119) is 21% smaller than its 5th grade class (150).
Student demographics
44%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 44% · STATE 52% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
MAP 2024-25 . % Proficient + AdvancedEnglish Language Arts
64.5%
MO avg 44.9% . +1.5pp since 2021
Math
65.6%
MO avg 43.8% . +4.8pp since 2021
What this means: On the MAP, Missouri's statewide test, about 65 of every 100 students at this school read and write at grade level and about 66 of 100 do math at grade level. Across all Missouri schools, those numbers are about 45 and 44. Reading and writing scores are up about 2 points since 2021, while math scores are up about 5 points.
Performance levels, 2024-25
| Subject | Advanced | Proficient | Basic | Below Basic |
|---|---|---|---|---|
| English Language Arts | 33.7% | 30.8% | 25.8% | 9.5% |
| Math | 36.2% | 29.4% | 20.8% | 13.3% |
Share of tested students at each MAP level. Each student counts in one level, so a row adds to about 100%.
MAP results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 64.5% | 65.6% |
| 2023-24 | 64.8% | 62.2% |
| 2022-23 | 66.1% | 62.0% |
| 2021-22 | 63.0% | 60.8% |
% Proficient + Advanced, all students and all tested grades.
Source: MAP. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
62.2%
composite math + reading, all grades
Predicted
55.3%
based on MO schools with similar FRL share
Beats by
+6.8pp
above demographic expectation
What this means: About 62% of students here test proficient in math and reading, compared with the roughly 55% typical for Missouri schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Missouri's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like CASTLIO ELEM.
CASTLIO ELEM.'s state test result (62.2% proficient) is higher than 1 of the 4 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| CASTLIO ELEM. this school | 847 | 12.2% | 62.2% |
| WARREN ELEM. ST PETERS | 729 | 9.9% | 71.5% |
| DISCOVERY RIDGE ELEMENTARY O'FALLON | 590 | 13.6% | 63.7% |
| ROCKWOOD CTR. EARLY CHILD. ED. CHESTERFIELD | 646 | 5.7% | N/A |
| BECKY-DAVID ELEM. ST CHARLES | 812 | 14.8% | 64.6% |
| DUELLO ELEM. LAKE ST LOUIS | 625 | 6.2% | 55.6% |
Matched among Missouri elementary schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where CASTLIO ELEM. ranks
Among elementary schools| Measure | This school | In Missouri | In St. Charles County |
|---|---|---|---|
| State test proficiency ranked highest first | 62.2% | #110 of 1,002 | #11 of 45 |
| Math proficiency ranked highest first | 65.6% | #96 of 1,019 ▲ 31 | #7 of 45 ▲ 2 |
| Reading proficiency ranked highest first | 64.5% | #97 of 1,018 ▼ 16 | #11 of 45 ▼ 2 |
| 3-year test score change ranked biggest gain first | +3.2pp | #371 of 943 | #18 of 44 |
| Enrollment ranked largest first | 847 | #10 of 1,294 | #4 of 55 |
| Students per teacher ranked fewest first | 12.9:1 | #493 of 950 | #34 of 51 |
| Diversity index ranked most diverse first | 43.9% | #400 of 953 | #30 of 51 |
| Free and reduced lunch ranked highest share first | 12.2% | #1,099 of 1,165 | #43 of 55 |
| Enrollment change since 2017-18 ranked fastest growth first | +6.3% | #153 of 251 | #7 of 13 |
Ranked against other public elementary schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
847
+46 (+6%) vs 2020
-43% since 1990-91, when it was 1,476
Student : Teacher
12.9:1
was 12.7:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 847 | 65.4 | 12.9:1 | 12% (103) |
| 2023-24 | 838 | 65 | 12.9:1 | 12% (103) |
| 2022-23 | 818 | 62 | 13.2:1 | 12% (99) |
| 2020-21 | 801 | 63 | 12.7:1 | 15% (123) |
| 2017-18 | 797 | 59.8 | 13.3:1 | 13% (107) |
| 2015-16 | 822 | 63 | 13.1:1 | 17% (142) |
| 2010-11 | 909 | 64 | 14.2:1 | 16% (146) |
| 2000-01 | 999 | 61 | 16.4:1 | 7% (71) |
| 1990-91 | 1,476 | 84 | 17.6:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for CASTLIO ELEM..
Since 2017-18: students up 6% (797 to 847); teachers up 9% (59.8 to 65.4).
About CASTLIO ELEM.
Families in ST CHARLES, Missouri, are served by CASTLIO ELEM., a high-enrollment elementary school. The school serves kindergarten through 5. Enrollment is 847 students. That is 169% larger than the average of about 315 students for elementary schools in Missouri.
The 21 schools in FRANCIS HOWELL R-III enroll 17,047 students altogether, CASTLIO ELEM. among them.
Federal enrollment data show CASTLIO ELEM. is 74% White. Other groups include 8% Asian, 6% Hispanic, 6% multiracial, and 5% Black. Census estimates put the White share of St. Charles County's population at about 84%. On a 0 to 100 scale, the school's diversity index is 44, compared with 70 nationally.
CASTLIO ELEM. lists 65.4 full-time-equivalent teachers; that is about 12.9 students per teacher. The average for elementary schools in Missouri is about 12.4:1. Free or reduced-price lunch covers 12% of the student body.
Predicted from its free or reduced-price lunch share, CASTLIO ELEM. would score about 55.3%. It scores 62.2%, 6.8 points above that figure.
Census data for St. Charles County show the median household earns about $104,692 a year, 43% of adults hold a bachelor's degree or higher, and about 4% of people live in poverty. Counting CASTLIO ELEM., St. Charles County has 93 public schools.
HOLLENBECK MIDDLE is about 1.4 miles away, making it the nearest public school. Within five miles of CASTLIO ELEM., there are at least 8 other public schools. On average proficiency, CASTLIO ELEM. is 2nd of 8 nearby schools with test data.
The National Center for Education Statistics classifies the school's location as Suburb: Large, meaning it is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Enrollment increased by 6% across 4 years, from 801 in 2020-21 to 847 in 2024-25.
This community page is for conversations about open houses, carpools, and field trips. Teachers and staff are welcome to share updates too.
St. Charles County at a glance
View full county profilePopulation
414,535
Census ACS
Median income
$104,692
Household, ACS
Bachelor's+
43%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
93
59,314 students
Quick facts
Related schools
Other schools in FRANCIS HOWELL R-III
- FRANCIS HOWELL HIGHHigh · 1,843 students
- FRANCIS HOWELL CENTRAL HIGHHigh · 1,750 students
- FRANCIS HOWELL NORTH HIGHHigh · 1,716 students
- FAIRMOUNT ELEM.Elementary · 971 students
- CENTRAL ELEM.Elementary · 865 students
- BRYAN MIDDLEMiddle · 827 students
Other schools in ST CHARLES
- FRANCIS HOWELL HIGHHigh · 1,843 students
- FRANCIS HOWELL CENTRAL HIGHHigh · 1,750 students
- FRANCIS HOWELL NORTH HIGHHigh · 1,716 students
- CENTRAL ELEM.Elementary · 865 students
- BRYAN MIDDLEMiddle · 827 students
- BECKY-DAVID ELEM.Elementary · 812 students
Nearby schools
- HOLLENBECK MIDDLE1.4 mi · 769
- CENTRAL ELEM.1.4 mi · 865
- EARLY CHILD FAMILY EDUC. CTR.1.5 mi · 117
- BARNWELL MIDDLE2.1 mi · 792
- BECKY-DAVID ELEM.2.2 mi · 812
- FAIRMOUNT ELEM.2.5 mi · 971
Frequently asked questions
About CASTLIO ELEM.What is the total enrollment at CASTLIO ELEM.?
CASTLIO ELEM. enrolls approximately 847 students in grades KG-05.
What grades does CASTLIO ELEM. serve?
CASTLIO ELEM. serves grades KG-05.
What is the student-teacher ratio at CASTLIO ELEM.?
The student-to-teacher ratio at CASTLIO ELEM. is approximately 12.9:1 (65 FTE teachers).
What is the racial breakdown of students at CASTLIO ELEM.?
At CASTLIO ELEM., the student body is approximately 74% White, 6% Hispanic, 5% Black, 8% Asian, 6% Two or more.
Who oversees CASTLIO ELEM.?
CASTLIO ELEM. is overseen by FRANCIS HOWELL R-III in St. Charles County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.