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Apollo Elementary School

Public Grades K-5
980th
SchoolDigger Rank ?
of 1,737 Illinois Elementary Schools
Better than 44% of Illinois elementary schools
Summary

Apollo Elementary School serves 362 students in kindergarten through grade 5 in Aledo, Illinois. Its results vary sharply by subject and grade: fifth-grade science and fourth-grade English language arts (ELA) stand out, while math is weaker overall than the state’s, especially in grades 4 and 5. In math, 34% of students were proficient in 2025–2026, compared with 40% statewide and 25% in the district; Apollo’s grade 4 result was 25%, versus 42% statewide, and its grade 5 result was 29%, versus 36%. The clearest concern for families is the drop in math performance in grades 4 and 5.

Apollo’s strongest comparisons are in science and upper-grade ELA. Fifth-grade science proficiency was 56%, 9 points above the state’s 48% and 6 points below the district’s 62%; Apollo also exceeded the published results for Andalusia Elementary School and Thomas Jefferson Elementary School, though it was below New Boston Elementary School. Overall ELA was essentially even with the state (56.1% at Apollo and 56.3% statewide) and 7 points above the district. In grade 4, Apollo reached 63%, compared with 56% statewide and a nearby-school average of 54%. In grade 5 ELA, its 55% result was also above the nearby-school average of 46%.

Results have improved substantially since 2023–2024: ELA rose 30 points to 56% in 2025–2026, while math rose 19 points to 34%; math remains 6 points below the state. Apollo is at the 44th statewide percentile in SchoolDigger’s 2025–2026 rankings (rank 980 of 1,737; 2 stars), compared with the 28th percentile and 1 star for Mercer County School District 404. SchoolDigger’s effectiveness ranking for White Students was at the 11th percentile, versus 44th overall; it fell 17 percentile points from the prior year. For Low Socio Economic Status Students, the ranking rose from the 35th to the 67th percentile between 2023–2024 and 2024–2025. These are group-specific school rankings, not student scores. Apollo’s 2024–2025 student-teacher ratio was 12.4, close to the nearby-school average of 12.5. In that same year, 52% of students were free/reduced lunch eligible, compared with a nearby-school average of 46%.

362
Students ?
12.4
Student/teacher ratio ?
$16,241
Per pupil spending ?
51.7%
Free/reduced lunch eligible (2024-25) ?
94.3%
Measles protection (all grades) (2025-26)
 801 SW 9th St
       Aledo, IL  61231-2316

(309) 582-5350

District: Mercer County School District 404


Students who attend Apollo Elementary School usually attend:

Middle:    Mercer County Junior High School
High:    Mercer County High School
Racial breakdown:

White:
89.2%
Two or more races:
6.1%
African American:
2.5%
more
 See top rated Illinois elementary schools

 Compare Apollo Elementary School to nearby elementary schools!
At a glance
▼ Ranking trend: Declining — 53rd percentile in 2016 → 44th in 2026
Worth a look
!Ranking has slipped — down 9 percentile points since 2016
!Some student groups rank well below the school's overall statewide standing
Students meeting standards (2025-2026) ?
This school49%
District avg45%
Illinois avg48%
980th of 1,737
Illinois public elementary schools ?
Bottom 44%▼ down 9 pts since 2016
From top 47% (2016) to bottom 44% (2026)
See the entire ranking list of Illinois Elementary Schools →
★★★★★
SchoolDigger rating ?
2nd of 2Elementary Schools in the Mercer County School District 404
530th of 738Mercer County School District 404 among Illinois districts
Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankIllinois percentileRating
202641.1980 of 173743.6%★★☆☆☆
202555.4901 of 205656.2%★★★☆☆
202432.81318 of 206736.2%★★☆☆☆
202340.31165 of 207743.9%★★☆☆☆
202239.01198 of 208242.5%★★☆☆☆
202131.11259 of 194835.4%★★☆☆☆
201942.21150 of 208644.9%★★☆☆☆
201837.71235 of 203739.4%★★☆☆☆
201741.91126 of 204444.9%★★☆☆☆
201649.4962 of 204653.0%★★★☆☆
201535.71243 of 205239.4%★★☆☆☆
201466.1731 of 209365.1%★★★☆☆
201368.4708 of 216767.3%★★★☆☆
201277.8445 of 216679.5%★★★★☆
201181.5293 of 214786.4%★★★★☆

Disabled

YearAvg scoreStatewide rankIllinois percentileRating
202542.7541 of 104948.4%★★☆☆☆
202440.3473 of 88646.6%★★☆☆☆
202350.8326 of 90764.1%★★★☆☆

Female

YearAvg scoreStatewide rankIllinois percentileRating
202635.9847 of 128634.1%★★☆☆☆
202550.6920 of 194252.6%★★★☆☆
202431.91272 of 194234.5%★★☆☆☆
202337.31151 of 195741.2%★★☆☆☆
202246.0945 of 197052.0%★★★☆☆
202135.91019 of 168039.3%★★☆☆☆
201938.71197 of 201940.7%★★☆☆☆
201835.61247 of 196436.5%★★☆☆☆

Low Socio Economic Status

YearAvg scoreStatewide rankIllinois percentileRating
202561.7588 of 180067.3%★★★☆☆
202436.01165 of 179335.0%★★☆☆☆
202341.51016 of 180843.8%★★☆☆☆
202254.6672 of 176361.9%★★★☆☆
202136.1961 of 151436.5%★★☆☆☆
201947.1908 of 181650.0%★★★☆☆
201843.2974 of 176544.8%★★☆☆☆

Male

YearAvg scoreStatewide rankIllinois percentileRating
202641.9760 of 131142.0%★★☆☆☆
202558.0787 of 194759.6%★★★☆☆
202433.51226 of 195937.4%★★☆☆☆
202343.31038 of 198447.7%★★☆☆☆
202232.81251 of 197736.7%★★☆☆☆
202123.31314 of 170723.0%★☆☆☆☆
201946.9993 of 201950.8%★★★☆☆
201840.61094 of 197244.5%★★☆☆☆

Special Education

YearAvg scoreStatewide rankIllinois percentileRating
202536.2772 of 129240.2%★★☆☆☆
202445.3548 of 119554.1%★★★☆☆
202340.3604 of 115647.8%★★☆☆☆
201944.5548 of 119454.1%★★★☆☆

White

YearAvg scoreStatewide rankIllinois percentileRating
202616.71020 of 114911.2%★☆☆☆☆
202533.6997 of 138928.2%★☆☆☆☆
202417.01231 of 139211.6%★☆☆☆☆
202324.01146 of 141919.2%★☆☆☆☆
202219.91234 of 142513.4%★☆☆☆☆
202115.61207 of 13087.7%☆☆☆☆☆
201926.41137 of 146222.2%★☆☆☆☆
201822.81208 of 146317.4%★☆☆☆☆
How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)
Low Socio Economic Status (2025)67th percentile+11 vs school
Disabled (2025)48th percentile-8 vs school
Male (2026)42nd percentile~ school
Special Education (2025)40th percentile-16 vs school
Female (2026)34th percentile-9 vs school
White (2026)11th percentile-32 vs school
By subject vs Illinois (2025-2026) ?
English Language Arts56%~ state avg
Science56%+8 vs state
Mathematics34%-6 vs state

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Frequently Asked Questions about Apollo Elementary School

Students at Apollo Elementary School are 89% White, 6% Two or more races, 2% African American, 1% Asian.

In the 2024-25 school year, 362 students attended Apollo Elementary School.

Apollo Elementary School ranks 980th of 1737 Illinois elementary schools. SchoolDigger rates this school 2 stars out of 5.

Students who attend Apollo Elementary School usually go on to attend:

Middle : Mercer County Junior High School
High : Mercer County High School

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Latest Illinois data All new data »
2025–26 school spending dataNewOct 30, 2026
2025–26 attendance data, dropout rates & graduation ratesNewOct 30, 2026
2025–26 ACT, IAR, ISA & PreACT Secure test scoresNewOct 30, 2026
2013–14 through 2025–26 immunization rates (updated)Oct 19, 2026


SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau, the Illinois Department of Public Health and the Illinois State Board of 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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