Zion Lutheran School
Private · Grades Pre-K–8 · 364 students
Castlio Elem.
1020 Dingledine Rd, St Charles, MO 63304
Grades
K–5
Elementary
Students
847
Enrolled 2024–25
Students per teacher
12.9 : 1
Full-time teachers
District
Francis Howell R-III
St. Charles County
Schola Grade A · Excellent
Letter grade (A–F) · compared with 1,103 Missouri elementary schools · How we grade
Percentiles compare this school with other Missouri elementary schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).
About Castlio Elem.
Castlio Elem. is a public elementary school in St Charles, Missouri, serving grades K–5. It is part of Francis Howell R-III. The school is located in a large suburb in St. Charles County.
In the 2024–25 school year, 847 students were enrolled, with about 12.9 students for every full-time teacher. That ratio is larger than the typical Missouri elementary school (12.1 students per teacher). Its Schola Grade is A (excellent), compared with 1,103 Missouri elementary schools.
Grades & enrollment
Students per grade, 2024–25Grades K–5
Location & nearby schools
School details
- Type
- Public School · What this means
- Level
- Elementary
- Grades offered
- K–5
- Enrollment (2024–25)
- 847 students
- Students per teacher
- 12.9 to 1
- Charter school
- No
- Magnet school
- No
- Locale
- Suburb — Large
- School district
- Francis Howell R-III
- County
- St. Charles County
- NCES school ID
- 292895001856
Schools near Castlio Elem.
All 35 schools in St Charles →
Central Elem.
Public · Grades Pre-K–5 · 865 students
Sts Joachim & Ann School
Private · Grades Pre-K–8 · 155 students
Becky-David Elem.
Public · Grades Pre-K–5 · 812 students
Fairmount Elem.
Public · Grades K–5 · 971 students
Henderson Elem.
Public · Grades K–5 · 653 students
School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.