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Riverdale Sr High School

9622 256th St N, Port Byron, IL 61275

ASchola Grade
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Grades
9–12
High
Students
324
Enrolled 2024–25
Students per teacher
11.9 : 1
Full-time teachers
District
Riverdale CUSD 100
Rock Island County

Schola Grade A · Excellent

Letter grade (A–F) · compared with 684 Illinois high schools · How we grade
Test scores32% proficient in math & reading
73rdpercentile
Equity30% of low-income students proficient
90thpercentile
Attendance24% chronically absent
70thpercentile
Graduation rate98% graduate in 4 years
97thpercentile
College readinessAt least 16% take AP, IB or dual-enrollment courses
37thpercentile
Class size11.9 students per teacher
69thpercentile

Percentiles compare this school with other Illinois high schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).

About Riverdale Sr High School

Riverdale Sr High School is a public high school in Port Byron, Illinois, serving grades 9–12. It is part of Riverdale CUSD 100. The school is located in a rural area near a town in Rock Island County.

In the 2024–25 school year, 324 students were enrolled, with about 11.9 students for every full-time teacher. That ratio is smaller than the typical Illinois high school (13.3 students per teacher). Its Schola Grade is A (excellent), compared with 684 Illinois high schools.

Grades & enrollment

Students per grade, 2024–25Grades 9–12

Location & nearby schools

9622 256th St N
Port Byron, IL 61275
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School details

Type
Public School · What this means
Level
High
Grades offered
9–12
Enrollment (2024–25)
324 students
Students per teacher
11.9 to 1
AP courses offered
2
Charter school
No
Magnet school
No
Locale
Rural — Fringe
School district
Riverdale CUSD 100
County
Rock Island County
NCES school ID
173393003484

Schools near Riverdale Sr High School

All 3 schools in Port Byron →

School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.