Schools in Mercer County School District 404, Illinois (2025)
5 schools · 1,274 students · 5 public · median Enrollment 270.
Mercer County School District 404, in Illinois, has 5 schools in United States's 2025 data, together educating about 1,274 students. By level there are 2 elementary, 1 high, 1 middle, 1 other; by sector 5 public.
The median Enrollment across Mercer County School District 404's schools is 270, below the Illinois median of 373. Students enrolled in the latest NCES directory year.
4 of the 5 schools qualify for the Success Index (US). The highest-scoring is Mercer County High School (46.1, lower 50% of high schools nationally), followed by Apollo Elem School (40.0, lower 50% of elementary schools nationally), and Mercer County Jr High School (37.3, lower 50% of middle schools nationally). Scores are percentiles within school type, so compare an elementary school with other elementary schools.
The largest schools are Mercer County High School (411 students), Apollo Elem School (362 students), Mercer County Jr High School (270 students).
Schools are spread across 3 citys, with the most in Aledo (3), New Boston (1), Joy (1).
Ranked schools in Mercer County School District 404
Ordered by Success Index (US). Rank positions shown on each profile are within United States and Illinois.
- 146Mercer County High SchoolAledo · Public High32% Math proficiency · 411 students
- 240Apollo Elem SchoolAledo · Public Elementary27% Math proficiency · 362 students
- 337Mercer County Jr High SchoolAledo · Public Middle17% Math proficiency · 270 students
- 435New Boston Elem SchoolNew Boston · Public Elementary24.5% Math proficiency · 165 students
| # | School | Sector | Success Index (US) | Key result | Students |
|---|---|---|---|---|---|
| 1 | Mercer County High School Aledo · High · Grades 9–12 | Public | 46.1 Lower 50% | 32% Math proficiency | 411 |
| 2 | Apollo Elem School Aledo · Elementary · Grades K–5 | Public | 40.0 Lower 50% | 27% Math proficiency | 362 |
| 3 | Mercer County Jr High School Aledo · Middle · Grades 6–8 | Public | 37.3 Lower 50% | 17% Math proficiency | 270 |
| 4 | New Boston Elem School New Boston · Elementary · Grades K–5 | Public | 34.5 Lower 50% | 24.5% Math proficiency | 165 |
Other schools in Mercer County School District 404
Schools without a rank: fewer than 60 students, no published Enrollment, or a school type that is not scored.
Compare the top 4 schools in Mercer County School District 404 side by side →
Citys in Mercer County School District 404
Other places in Illinois
- Chicago(628)
- Aurora(49)
- Rockford(44)
- Naperville(40)
- Peoria(34)
- Joliet(31)
- Springfield(31)
- Plainfield(29)
- Elgin(26)
- Waukegan(23)
- Belleville(20)
- Crystal Lake(18)
- Normal(17)
- Downers Grove(17)
- Champaign(17)
- Cicero(17)
- Des Plaines(17)
- Wheaton(17)
- Bloomington(16)
- Evanston(16)
- Decatur(15)
- Schaumburg(15)
- Skokie(14)
- Elmhurst(14)
- New Lenox(14)
- Palatine(14)
- Bolingbrook(14)
- Arlington Heights(13)
- Oak Lawn(13)
- Glenview(13)
- Berwyn(13)
- Chicago Heights(13)
- Orland Park(13)
- Lombard(13)
- Moline(13)
- Pekin(13)
- Rock Island(13)
- Saint Charles(13)
- Buffalo Grove(12)
- Tinley Park(12)
Free academic assessment
Is your child on grade level in reading and math?
Success Tutoring offers personalised English and math tutoring from Kindergarten to Grade 12. Start with a free online assessment and a clear plan for the year ahead.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Centres across NSW, VIC, QLD, WA, SA and ACT
Frequently asked questions
What is the best school in Mercer County School District 404?
Mercer County High School is the highest-ranked school in Mercer County School District 404 with a Success Index (US) of 46.1 out of 100 (Lower 50% of high schools in United States).
How many schools are in Mercer County School District 404?
Mercer County School District 404 has 5 schools (1 high, 2 elementary, 1 middle, 1 other) educating 1,274 students in 2025.
What is the typical Enrollment in Mercer County School District 404?
The median Enrollment across schools in Mercer County School District 404 is 270. Students enrolled in the latest NCES directory year.