Alleman High School
Diocesan school · Grades 9–12
Rock Island, IL
1103 40th St, Rock Island, IL 61201
Overall grade: B+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- A-Class size
- B+College-going
- B+Years serving families
- ADiversity
What stands out
- One of 2 Catholic schools in Rock Island
In Rock Island, Illinois, Alleman High School is a Catholic diocesan school for students from 9th grade through 12th grade. About 264 students attend, with roughly 13 students per teacher. The school is part of the Diocese of Peoria. The school reports that about 79% of its graduates go on to four-year colleges. The school day runs about 6.5 hours, 179 days a year.
At a glance
- Grades
- Grades 9–12
- Students
- 264
- Teachers
- 20 (full-time equivalent)
- Students per teacher
- 13.2
- Boys and girls
- Coed · 132 girls, 132 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Diocese of Peoria
- School day
- About 6.5 hours
- School year
- 179 days
- Graduates going to 4-year colleges
- About 79% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
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How it compares
- A smaller school: fewer students than 67% of Catholic high schools in Illinois.
- Compared with 51 Catholic high schools in Illinois.
Students by survey year
Total students reported in official records since 2015–16.
Students by grade
Student body
Member of
- National Catholic Educational Association
Questions to ask on a tour
- What is tuition, and what does it include (books, fees, uniforms, trips)?
- Do you offer financial aid, sibling discounts or payment plans?
- Do you accept ESA, voucher or tax-credit scholarship funds?
- How big are classes in my child's grade?
- What support is there for students who need extra help or more challenge?
- Is the school accredited, and by whom?
- What do a typical day and a typical week look like?
- How does the school communicate with families?
Questions about Alleman High School
What grades does Alleman High School serve?
Alleman High School serves grades 9–12.
How many students attend Alleman High School?
About 264 students, with 13 students per teacher, according to official records.
How much is tuition at Alleman High School?
Call the school to ask about tuition, financial aid and payment plans.
Official record · Updated October 2026 · Official search · Something wrong? Tell us
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