High · Regular · Grades 9 to 12

Riverdale Senior High School, Port Byron, IL

Riverdale Senior High School is a public high school in Port Byron, part of Riverdale CUSD 100. It enrolled 324 students in 2024-25, with 12.0 students per full-time teacher.Listed in NCES data as "Riverdale Sr High School".

Enrollment and teachers

Students: 324
Teachers (FTE): 27.0
Students per teacher: 12.0
Grades: 9 to 12

This school's ratio is 0.9 lower than the district figure of 12.9. The Illinois average across schools is 13.7. Ratios count all teachers, including specialists, so they are lower than typical class sizes.

This school12.0

District12.9

Illinois13.7

United States15.3

School details

Address: 9622 256th St N, Port Byron, IL 61275
Phone: (309)523-3181
District: Riverdale CUSD 100
County: Rock Island County
Level: High
Type: Regular
Status: Open
Charter: No
Virtual: No
Locale: Rural: Fringe
NCES school ID: 173393003484

Location from NCES coordinates. Map data OpenStreetMap contributors. Open larger map

School meals

Counts of students eligible for free or reduced-price lunch, as reported to NCES.

Free or reduced-price lunch: 5216.0% of enrollment.
Community Eligibility Provision: No

Schools in the Community Eligibility Provision (CEP) serve free meals to all students, so their free lunch counts often reflect direct certification or total enrollment. Free and reduced lunch shares are not comparable between CEP and non-CEP schools.

Related schools

We publish official enrollment and staffing data, not ratings or test scores.

Source: NCES Common Core of Data 2024-25 and F-33 finance 2020, via the Urban Institute Education Data Portal. Last reviewed October 2026. Blank values are not available, not applicable or suppressed in the source. See the methodology.