Enrollment
362
Elementary
DISTRICT 198 · STATE 381
SCHOOL COMMUNITY·MERCER COUNTY SCHOOL DISTRICT 404·NCES 170139500019
Apollo Elementary School
801 SW 9th St, Aledo, IL 61231 · (309) 582-5350 · Mercer County
GRADES KG–05ELEMENTARY42-RURALTITLE IREGULAR SCHOOL362 STUDENTS
Student : Teacher
12.5:1
29 FTE teachers
DISTRICT 14.1:1 · STATE 13.9:1
Free / Reduced Lunch
52%
187 students
DISTRICT 52% · STATE 56%
Community
0
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 | 69 | 19% |
| Grade 1 | 55 | 15% |
| Grade 2 | 47 | 13% |
| Grade 3 | 71 | 20% |
| Grade 4 | 50 | 14% |
| Grade 5 | 70 | 19% |
This year's kindergarten class (69) is about the same size as its 5th grade class (70).
Student demographics
20%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 17% · STATE 69% · 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
School pathway
Students here typically continue to
Based on grade levels within Mercer County School District 404. Attendance zones can vary; confirm enrollment with the district.
Test scores
IAR + ISA 2024-25 . % Proficient (Levels 4-5)English Language Arts
58.1%
IL avg 51.0% . +32.2pp since 2023
Math
33.2%
IL avg 37.9% . +18.7pp since 2023
What this means: On the IAR + ISA, Illinois's statewide test, about 58 of every 100 students at this school read and write at grade level and about 33 of 100 do math at grade level. Across all Illinois schools, those numbers are about 51 and 38. Reading and writing scores are up about 32 points since 2023, while math scores are up about 19 points.
IAR + ISA results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 58.1% | 33.2% |
| 2023-24 | 25.9% | 14.5% |
% Proficient (Levels 4-5), all students and all tested grades.
Source: IAR + ISA. 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
42.2%
composite math + reading, all grades
Predicted
41.7%
based on IL schools with similar FRL share
Beats by
+0.5pp
above demographic expectation
What this means: About 42% of students here test proficient in math and reading, compared with the roughly 42% typical for Illinois 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 Illinois'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 Apollo Elementary School
Apollo Elementary School's state test result (42.2% proficient) is higher than 2 of the 3 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Apollo Elementary School this school | 362 | 51.7% | 42.2% |
| Carlyle Elementary School Carlyle | 364 | 52.5% | 51.1% |
| Carlinville Primary School Carlinville | 376 | 51.3% | N/A |
| Westview Elementary School Canton | 377 | 50.4% | 41.2% |
| Jerseyville West Elementary School Jerseyville | 352 | 51.7% | N/A |
| Henry-Senachwine Grade School Henry | 387 | 51.4% | 36.8% |
Matched among Illinois 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 Apollo Elementary School ranks
Among elementary schools| Measure | This school | In Illinois |
|---|---|---|
| State test proficiency ranked highest first | 42.2% | #850 of 1,925 |
| Math proficiency ranked highest first | 33.2% | #1,179 of 2,077 ▲ 237 |
| Reading proficiency ranked highest first | 58.1% | #741 of 2,077 ▲ 593 |
| Enrollment ranked largest first | 362 | #1,192 of 2,419 |
| Students per teacher ranked fewest first | 12.5:1 | #716 of 2,035 |
| Diversity index ranked most diverse first | 19.9% | #1,622 of 2,042 |
| Free and reduced lunch ranked highest share first | 51.7% | #1,258 of 2,132 |
| Enrollment change since 2017-18 ranked fastest growth first | +5.8% | #401 of 615 |
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
362
+47 (+15%) vs 2020
+11% since 2010-11, when it was 327
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 | 362 | 29 | 12.5:1 | 52% (187) |
| 2023-24 | 345 | 26 | 13.3:1 | 52% (181) |
| 2022-23 | 335 | 26.6 | 12.6:1 | 46% (155) |
| 2020-21 | 315 | N/A | N/A | N/A |
| 2017-18 | 342 | 21 | 16.3:1 | 35% (120) |
| 2015-16 | 367 | 23 | 16.0:1 | 41% (149) |
| 2010-11 | 327 | 23 | 14.2:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Apollo Elementary School.
Since 2017-18: students up 6% (342 to 362); teachers up 38% (21 to 29).
About Apollo Elementary School
Apollo Elementary School is a mid-sized elementary school located in Aledo, Illinois. There are 362 students enrolled, covering kindergarten through 5.
A total of 5 schools make up Mercer County School District 404, with 1,274 students enrolled.
By race and ethnicity, Apollo Elementary School is 89% White. The next largest groups are 6% multiracial and 2% Black. A diversity index of 20% means there is a 20% chance two randomly chosen students at Apollo Elementary School are from different groups.
There are about 12.5 students for every full-time-equivalent teacher at Apollo Elementary School, which has 29. Elementary schools in Illinois average 13.9:1, 1.4 more students per teacher than here. Free or reduced-price lunch eligibility at Apollo Elementary School is about 52%. That is higher than the 44% average for public schools in Mercer County.
The BeatsExpectations prediction for Apollo Elementary School is 41.7%, and its average proficiency rate across its state test results is 42.2%.
Census data for Mercer County show median household income comes to about $74,182, about 21% of adults have at least a bachelor's degree, and the poverty rate is about 7%. The county has 8 public schools and about 1,941 students.
The closest school to Apollo Elementary School is Mercer County Jr High School, located about 0.1 miles away. There are 2 more public schools inside five miles. Local comparison: Apollo Elementary School ranks 5th of 8 nearby schools, at 42.2% versus a 41.3% average.
Its NCES locale code is Rural: Distant: the school is in rural territory some distance from an urban area.
From 2020-21 to 2024-25, enrollment rose from 315 to 362, a 15% rise.
On allk12, people connected to Apollo Elementary School can post about pickup and drop-off, after-school programs, and teacher feedback. Current and former families are welcome to add their experience.
Mercer County at a glance
View full county profilePopulation
15,495
Census ACS
Median income
$74,182
Household, ACS
Bachelor's+
21%
Adults 25+
Poverty rate
7%
Below federal line
Schools in county
8
1,941 students
Quick facts
Related schools
Other schools in Mercer County School District 404
- Mercer County High SchoolHigh · 411 students
- Mercer County Jr High SchoolMiddle · 270 students
- New Boston Elementary SchoolElementary · 165 students
- Mercer County ELCElementary · 66 students
Other schools in Aledo
- Mercer County High SchoolHigh · 411 students
- Mercer County Jr High SchoolMiddle · 270 students
Other Apollo Elementary schools
6 other US public schools in 6 states are named Apollo Elementary. Apollo Elementary School is the 7th largest of the 7.
- Apollo Elementary SchoolDes Plaines, IL · 536 students
- Apollo Elementary SchoolBossier City, LA · 756 students
- APOLLO ELEMENTARY SCHOOLTITUSVILLE, FL · 596 students
- Apollo Elementary SchoolGoddard, KS · 544 students
- Apollo Elementary SchoolBethany, OK · 509 students
Nearby schools
- Mercer County Jr High School0.1 mi · 270
- Mercer County High School0.6 mi · 411
- Mercer County ELC6.3 mi · 66
- Matherville Intermediate School9.3 mi · 182
- Winola Elementary School9.3 mi · 261
- New Boston Elementary School12.3 mi · 165
Frequently asked questions
About Apollo Elementary SchoolHow many students attend Apollo Elementary School?
Apollo Elementary School enrolls approximately 362 students in grades KG-05.
What age range does Apollo Elementary School serve?
Apollo Elementary School serves students from grade KG through grade 05.
How many teachers does Apollo Elementary School have?
Apollo Elementary School employs 29 FTE teachers, for a student-to-teacher ratio of 12.5:1.
What is the student diversity at Apollo Elementary School?
Student demographics at Apollo Elementary School are roughly 89% White, 1% Hispanic, 2% Black, 1% Asian, 6% Two or more.
What district is Apollo Elementary School in?
Apollo Elementary School is part of Mercer County School District 404.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.