CASTLIO ELEM.
Score 88.1/100: better than 88% of Missouri elementary schools on 2024-25 state tests. Schools are only compared with others of the same type in the same state. How we score schools
Performance (state tests, 2024-25)
% Proficient or Advanced on state tests in Missouri, all students. Colored bars are green when the school is at or above the average for similar Missouri schools.
Results over time
How this school's published results have moved year by year.
All 10 published results by grade and test
As published by Missouri Department of Elementary and Secondary Education. "Hidden" means the state didn't publish the result to protect student privacy.
| Subject | Grade | Test | Result | Students tested |
|---|---|---|---|---|
| English language arts | Grade 3 | MAP | 55.2 | 141 |
| English language arts | Grade 4 | MAP | 72.2 | 159 |
| English language arts | Grade 5 | MAP | 63.8 | 152 |
| English language arts | All grades | MAP | 64.5 | 441 |
| Math | Grade 3 | MAP | 56 | 141 |
| Math | Grade 4 | MAP | 73.5 | 159 |
| Math | Grade 5 | MAP | 65 | 152 |
| Math | All grades | MAP | 65.6 | 441 |
| Science | Grade 5 | MAP | 53.2 | 152 |
| Science | All grades | MAP | 54.6 | 148 |
School profile
- Grades
- K-5
- Students
- 838
- Type
- Elementary school
- Charter school
- No
- Program
- Regular
Students
District and location
Contact
St Charles, MO 63304
"Typical" is the middle (median) elementary school in Missouri. Higher or lower is not in itself better or worse. Address, phone and website are as the state reported them to the U.S. Department of Education for 2024-25, so check with the school before visiting. School details: U.S. Department of Education, Common Core of Data (enrollment 2023-24, lunch eligibility 2024-25).
Nearby elementary schools
Straight-line distance. Check the district's attendance zones: living close to a school doesn't guarantee a place.
Explore schools around St Charles
Location
Official sources
Every figure on this page comes from published government data. Check the originals here; we refresh when states release new results.
Missouri publishes the percentage of students at each performance level; we add up the levels it counts as proficient.
U.S. Department of Education, National Center for Education Statistics, Common Core of Data (CCD): school directory, grades served, enrollment and free/reduced-price lunch, 2023-24 and 2024-25. Spotted a mistake? Tell us.
CASTLIO ELEM. at a glance
CASTLIO ELEM. is a public elementary school in St Charles, Missouri, serving grades K-5. It is part of the Francis Howell R-Iii school district. It has about 838 students (a typical Missouri elementary school has 331). About 12% of students are eligible for free or reduced-price lunch, compared with 50% at a typical Missouri elementary school, which is useful context when reading test results.
In 2024-25 state tests, 65% in English language arts (similar schools: 45%) and 66% in math (similar schools: 44%) reached the state standard (% Proficient or Advanced). On our score, which compares it only with other Missouri elementary schools, it scores 88.1 out of 100: better than 88% of them, ranking #118 of 991. Its English language arts result was broadly unchanged from the year before. This overview is generated automatically from published state and federal data; figures are rounded, and you can check the originals via the official sources above.
Page updated 2026-10-12.