Castlio Elementary

Summary:

Castlio Elementary is a public elementary school in Saint Charles, Missouri, serving 818 students in grades K-5 and part of the highly-ranked Francis Howell R-III school district. The school consistently performs among the top elementary schools in the state, with students exceeding state and district averages on standardized tests and the school receiving a 4-star rating from SchoolDigger.

Castlio Elementary stands out for its strong academic performance, with students scoring significantly higher than the state average on the Missouri Assessment Program (MAP) tests across all grade levels and subject areas. The school also has a relatively low percentage of students receiving free or reduced-price lunch at 12.1%, compared to nearby schools ranging from 9.19% to 31.65%. However, the school's student population is less racially diverse, with a higher percentage of White students (78.73%) compared to nearby schools, which have more diverse racial compositions.

When compared to other schools in the Francis Howell R-III district, Castlio Elementary is a standout performer, consistently outpacing the district and state averages on academic measures. While some nearby schools, such as Warren Elementary and Independence Elementary, also demonstrate exceptional academic performance, Castlio's consistent high rankings and strong student outcomes make it a top choice for families in the area.


Detail:

Public K-5

 1020 Dingledine Rd
       Saint Charles, MO  63304-6906


(636) 851-4300

District: Francis Howell R-III

SchoolDigger Rank:
133rd of 898 Missouri Elementary Schools

Per Pupil Expenditures:  $13,685 Help


Students who attend Castlio Elementary usually attend:

Middle:    Bryan Middle
High:    Francis Howell Central High

Student/teacher ratio:  13.1 Help
Number of students:  818

Racial breakdown:

White:
78.7%
Hispanic:
6.2%
Two or more races:
5.9%
more

Free/discounted lunch recipients:  12.1% Help


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Performance Trends
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Compare Details Castlio Elementary ranks better than 85.2% of elementary schools in Missouri. It also ranks 7th among 10 ranked elementary schools in the Francis Howell R-III School District. (See more...)
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Compare Details In 2023 the calculated Average Standard Score was 81.88. (See more...)
Help
Chronic absenteeism in a school refers to a situation where students repeatedly miss school, with the threshold often defined as missing 10% or more of school days for any reason, excused or unexcused.
Student Body
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Compare Details Racial makeup is: White (78.7%), Hispanic (6.2%), two or more races (5.9%). (See more...)
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Compare Details 12.1% of students are receiving a free or discounted lunch. (See more...)
Teachers
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Compare Details The student/teacher ratio at Castlio Elementary is 13.1, which is the 4th best among 10 elementary schools in the Francis Howell R-III School District. (See more...)
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Compare Castlio Elementary employs 62 full-time teachers.
Finance
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Compare Details The average total spent per student at Castlio Elementary is $13,685, which is the highest among 10 elementary schools in the Francis Howell R-III School District!
Schooldigger 2023 Rankings:

Castlio Elementary:

SchoolDigger ranks Castlio Elementary 133rd of 898 Missouri public elementary schools. (See Castlio Elementary in the ranking list.)

Elementary School Test Score Ratings by Student Subgroup:


Special Education students:
White students:


Francis Howell R-III:

SchoolDigger ranks Francis Howell R-III 14th of 376 Missouri school districts. (See district ranking list.)

Average Parent Rating:

Read all reviews and ratings detail for Castlio Elementary.

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Rank History for Castlio Elementary

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Compare

Rank History for all students at Castlio Elementary

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools MO State Percentile SchoolDigger Rating
2006 73.71 197th 1074 81.7%
2007 74.32 188th 1080 82.6%
2008 71.14 233rd 1084 78.5%
2009 70.66 251st 1053 76.2%
2010 80.30 146th 1066 86.3%
2011 77.97 174th 1088 84.0%
2012 89.12 53rd 1085 95.1%
2013 88.85 55th 1108 95.0%
2014 88.39 68th 1089 93.8%
2015 86.68 99th 1058 90.6%
2016 84.73 112th 865 87.1%
2017 88.27 68th 1032 93.4%
2018 87.13 91st 1045 91.3%
2019 89.25 60th 1052 94.3%
2021 87.05 93rd 901 89.7%
2022 86.47 92nd 908 89.9%
2023 81.88 133rd 898 85.2%
See the entire list of Missouri Elementary School Rankings!

Rank History for Special Education students at Castlio Elementary

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools MO State Percentile SchoolDigger Rating
2023 58.50 29th 107 72.9%
See the entire list of Best Missouri Elementary Schools for Special Education Students!

Rank History for Low Socio Economic Status students at Castlio Elementary

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools MO State Percentile SchoolDigger Rating
2018 57.56 327th 887 63.1%
2019 89.37 31st 907 96.6%
See the entire list of Best Missouri Elementary Schools for Low Socio Economic Status Students!

Rank History for Disabled students at Castlio Elementary

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools MO State Percentile SchoolDigger Rating
2018 43.15 160th 251 36.3%
2019 58.08 133rd 302 56.0%
2021 68.05 19th 81 76.5%
2022 49.65 55th 103 46.6%
See the entire list of Best Missouri Elementary Schools for Disabled Students!

Rank History for Gifted and Talented students at Castlio Elementary

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools MO State Percentile SchoolDigger Rating
2018 69.59 18th 70 74.3%
2019 71.15 11th 91 87.9%
See the entire list of Best Missouri Elementary Schools for Gifted and Talented Students!

Rank History for White students at Castlio Elementary

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools MO State Percentile SchoolDigger Rating
2018 82.30 112th 898 87.5%
2019 83.59 94th 917 89.7%
2021 81.71 102nd 691 85.2%
2022 78.03 133rd 675 80.3%
2023 72.76 159th 673 76.4%
See the entire list of Best Missouri Elementary Schools for White Students!

Data source: test scores: Missouri Department of Elementary and Secondary Education, rankings: SchoolDigger.com

As you review the school rankings data, please be aware that some of the information from certain demographics is missing. The reason for this omission is that the data has been redacted from the source data itself due to low population samples in these specific demographic groups.

Redacting data from low population samples is a necessary step to ensure the reliability and accuracy of the results, as small sample sizes may not be representative of the broader population. Additionally, this measure helps protect the privacy of individuals belonging to these demographic groups.

Castlio Elementary Test Scores
Tests: 
  
Grades: 
  
Years: 
  
Group by: 
District Scores:
State Scores:    
  
Subgroup: 





Data source: Missouri Department of Elementary and Secondary Education

Review counts

All ratings (Avg rating: 3)
0%

0%

100%

0%

0%

  

Reviews:
by a parent
Friday, August 26, 2016

Open Quote I had great expectation when i moved my kids to Castlio Elementary. I see some staff are great and stay with up to date /track kids progress in their class and in Advanced class or Extensions / Sega / Spectra. My kid unfortunately got a teacher who I don't think is passionate in teaching , tracking kids activities nor she is aware of progress of kids educational activities in Advanced class or Extensions / Sega / Spectra. Another big drawback this school / school district is they don't have Science or Social subjects at Elementary, which is a big difference when compared to Rockwood or Ladue schools. Only subject where the school does good is in Language & Arts. I definitely think, teachers who are teaching 20 years in a conventional ways must have to go through training to accept the changes in STEM and incorporate in academics, inspire kids showing interest teaching and tracking kids progress. My experience so far, teacher makes a big difference on child's academics and future. This school does need to improve the quality of teachers and academics. Close Quote



Enrollment information for Castlio Elementary

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Compare
Year White African American Asian Hispanic American Indian Pacific Islander Two or More Races Not Specified Total
1991 0 0 0 0 0 n/a n/a 1476 1476
1992 1260 0 0 0 0 n/a n/a 0 1260
1993 1359 0 0 0 0 n/a n/a 0 1359
1994 1332 92 1 0 0 n/a n/a 0 1425
1995 1378 30 6 3 4 n/a n/a 0 1421
1996 1378 30 6 3 4 n/a n/a 0 1421
1997 1424 25 10 12 1 n/a n/a 0 1472
1998 1424 30 11 14 2 n/a n/a 0 1481
1999 1301 32 11 13 3 n/a n/a 0 1360
2000 1049 29 14 15 10 n/a n/a 0 1117
2001 937 30 16 12 4 n/a n/a 0 999
2002 906 35 14 17 5 n/a n/a 0 977
2003 906 35 14 17 5 n/a n/a 0 977
2004 910 35 11 13 4 n/a n/a 0 973
2005 889 29 7 14 4 n/a n/a 0 943
2006 884 33 7 14 1 n/a n/a 0 939
2007 911 34 13 12 2 n/a n/a 0 972
2008 908 30 19 17 1 n/a n/a 0 975
2009 898 22 18 12 1 n/a n/a 0 951
2010 870 28 21 16 1 n/a n/a 0 936
2011 817 47 26 17 1 1 0 0 909
2012 764 47 33 19 1 0 12 0 876
2013 773 41 40 23 0 0 20 0 897
2014 739 45 35 36 0 0 32 0 887
2015 722 33 30 32 0 0 32 0 849
2016 678 37 35 38 0 0 34 0 822
2017 650 36 37 41 0 0 29 0 793
2018 638 45 39 45 1 0 29 0 797
2019 644 34 41 43 4 0 28 0 794
2020 685 34 39 48 7 1 27 0 841
2021 651 38 40 42 0 0 30 0 801
2022 636 35 33 52 0 0 42 0 798
2023 644 42 33 51 0 0 48 0 818

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Enrollment/Ethnicity

For more information about how the Department of Education defines ethnicity, see Defining Race and Ethnicity Data, National Center for Education Statistics

Students eligible for free or discounted lunch at Castlio Elementary

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Compare
Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
1991 1476 84.2 17.5 n/a
1992 1260 74.9 16.8 10.2
1993 1359 79.1 17.2 6.2
1994 1425 85.2 16.7 7.6
1995 1421 81.6 17.4 8.1
1996 1421 81.6 17.4 8.1
1997 1472 88.4 16.7 4.9
1998 1481 85.8 17.3 4.8
1999 1360 87.2 15.6 6
2000 1117 71.7 15.6 6.8
2001 999 61.6 16.2 7.1
2002 977 62.5 15.6 8
2003 977 62.5 15.6 8
2004 973 64.4 15.1 8.6
2005 943 64.5 14.6 8.4
2006 939 64.5 14.6 10.3
2007 972 63.4 15.3 11.4
2008 975 65.0 15.0 12
2009 951 66.9 14.2 11.9
2010 936 63.9 14.6 13.7
2011 909 64.9 13.9 16.1
2012 876 60.5 14.4 16.9
2013 897 66.0 13.5 15.9
2014 887 69.5 12.7 19.5
2015 849 69.0 12.3 16.7
2016 822 63.0 13.0 17.3
2017 793 59.7 13.2 14.9
2018 797 59.8 13.3 13.4
2019 794 60.3 13.1 13.4
2020 841 61.0 13.7 13.9
2021 801 63.0 12.7 15.4
2022 798 63.0 12.6 13.5
2023 818 62.0 13.1 12.1

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Students eligible for discounted/free lunch:

The National School Lunch Program (NSLP) provides low-cost or free meals to students in U.S. public and nonprofit private schools based on household income. Those with incomes below 130% of the poverty line receive free lunch, while those between 130% and 185% qualify for reduced-price lunch. The percentage of students receiving free or reduced-price lunch serves as a marker for poverty, as it reflects the socioeconomic status of families in a given school or district. A higher FRPL rate typically indicates a higher concentration of low-income families, suggesting that the school or district may face additional challenges in providing adequate resources and support for student success.

Student/Teacher Ratio Castlio Elementary

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Compare
Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
1991 1476 84.2 17.5 n/a
1992 1260 74.9 16.8 10.2
1993 1359 79.1 17.2 6.2
1994 1425 85.2 16.7 7.6
1995 1421 81.6 17.4 8.1
1996 1421 81.6 17.4 8.1
1997 1472 88.4 16.7 4.9
1998 1481 85.8 17.3 4.8
1999 1360 87.2 15.6 6
2000 1117 71.7 15.6 6.8
2001 999 61.6 16.2 7.1
2002 977 62.5 15.6 8
2003 977 62.5 15.6 8
2004 973 64.4 15.1 8.6
2005 943 64.5 14.6 8.4
2006 939 64.5 14.6 10.3
2007 972 63.4 15.3 11.4
2008 975 65.0 15.0 12
2009 951 66.9 14.2 11.9
2010 936 63.9 14.6 13.7
2011 909 64.9 13.9 16.1
2012 876 60.5 14.4 16.9
2013 897 66.0 13.5 15.9
2014 887 69.5 12.7 19.5
2015 849 69.0 12.3 16.7
2016 822 63.0 13.0 17.3
2017 793 59.7 13.2 14.9
2018 797 59.8 13.3 13.4
2019 794 60.3 13.1 13.4
2020 841 61.0 13.7 13.9
2021 801 63.0 12.7 15.4
2022 798 63.0 12.6 13.5
2023 818 62.0 13.1 12.1

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Student-Teacher Ratio

Student/teacher ratio is calculated by dividing the total number of students by the total number of full-time equivalent teachers. Please note that a smaller student/teacher ratio does not necessarily translate to smaller class size. In some instances, schools hire teachers part time, and some teachers are hired for specialized instruction with very small class sizes. These and other factors contribute to the student/teacher ratio. Note: For private schools, Student/teacher ratio may not include Pre-Kindergarten.
Finances

Per Pupil Expenditures for Castlio Elementary

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YearExpenditures from Federal FundsExpenditures from State and Local FundsTotal Expenditures Per Pupil (All Funds)
2019 $480 (3.9%) $11,696 (96.1%) $12,176
2020 $468 (3.9%) $11,592 (96.1%) $12,060
2021 $593 (4.4%) $12,741 (95.6%) $13,334
2022 $1,059 (7.7%) $12,626 (92.3%) $13,685

Data source: Missouri Department of Education
Pre and Post Pandemic Data

Impact of COVID-19 on Castlio Elementary

The coronavirus has had a profound impact on education in America. Learning shifted online overnight, attendance numbers dwindled, and enrollment decreased. SchoolDigger.com is making it easier for you to better assess how COVID-19 has impacted your school. Through the collection of pre-pandemic (2019) and current data, SchoolDigger.com is sharing test scores, enrollment numbers and school demographics from schools across the country – and we make it easy to see how impacted schools compare locally and statewide.

Rankings

Rank
Pre-pandemic (2018-2019)
Rank
Post pandemic (2022-2023)
Change (%)
Ranks 60th of 1052 Elementary schoolsRanks 133rd of 898 Elementary schools
 9.1%

Test Scores

% proficient
Pre-pandemic (2018-2019)
% proficient
Post pandemic (2022-2023)
Change (%)
3rd Grade Mathematics (Castlio Elementary)71.959.4
 12.5%
   3rd Grade Mathematics (Francis Howell R-III)66.856.3
 10.5%
   3rd Grade Mathematics (Missouri)4641.1
 4.9%
3rd Grade English Language Arts (Castlio Elementary)73.358.7
 14.6%
   3rd Grade English Language Arts (Francis Howell R-III)69.560.3
 9.2%
   3rd Grade English Language Arts (Missouri)48.742.4
 6.3%
4th Grade Mathematics (Castlio Elementary)64.676.5
 11.9%
   4th Grade Mathematics (Francis Howell R-III)66.467.7
 1.3%
   4th Grade Mathematics (Missouri)46.843.8
 3%
4th Grade English Language Arts (Castlio Elementary)65.476.3
 10.9%
   4th Grade English Language Arts (Francis Howell R-III)70.371.7
 1.4%
   4th Grade English Language Arts (Missouri)49.345.9
 3.4%
5th Grade Mathematics (Castlio Elementary)65.146.6
 18.5%
   5th Grade Mathematics (Francis Howell R-III)65.956
 9.9%
   5th Grade Mathematics (Missouri)40.339.1
 1.2%
5th Grade Science (Castlio Elementary)63.541.3
 22.2%
   5th Grade Science (Francis Howell R-III)56.555.1
 1.4%
   5th Grade Science (Missouri)42.540.9
 1.6%
5th Grade English Language Arts (Castlio Elementary)6959.5
 9.5%
   5th Grade English Language Arts (Francis Howell R-III)6863.1
 4.9%
   5th Grade English Language Arts (Missouri)47.144.1
 3%

Student Body

Number of students
Pre-pandemic (2018-2019)
Number of students
Post pandemic (2022-2023)
Change (%)
Total Students794818
 3%
African American3442
 23.5%
American Indian40
 100%
Asian4133
 19.5%
Hispanic4351
 18.6%
Pacific Islander00
White644644
Two or More Races2848
 71.4%
% Free/Discounted Lunch Recipients13.4%12.1%
 1.2%


Schools Near Castlio Elementary









Frequently Asked Questions about Castlio Elementary

Castlio Elementary ranks 133rd of 898 Missouri elementary schools. SchoolDigger rates this school 4 stars out of 5.

In the 2022-23 school year, 818 students attended Castlio Elementary.

Students at Castlio Elementary are 79% White, 6% Hispanic, 6% Two or more races, 5% African American, 4% Asian.

Students who attend Castlio Elementary usually go on to attend:

Middle : Bryan Middle
High : Francis Howell Central High


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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Missouri Department of Elementary and Secondary Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.





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