High · Regular · Grades 9 to 12

Seneca High School, Seneca, IL

Seneca High School is a public high school in Seneca, part of Seneca Twp HSD 160 School District. It enrolled 378 students in 2024-25, with 9.9 students per full-time teacher.

Enrollment and teachers

Students: 378
Teachers (FTE): 38.0
Students per teacher: 9.9
Grades: 9 to 12

This school's ratio is about the same as the district figure of 9.9. The Illinois average across schools is 13.7. Ratios count all teachers, including specialists, so they are lower than typical class sizes.

This school9.9

District9.9

Illinois13.7

United States15.3

School details

Address: 307 E Scott St, Seneca, IL 61360
Phone: (815)357-5000
District: Seneca Twp HSD 160 School District
County: LaSalle County
Level: High
Type: Regular
Status: Open
Charter: No
Virtual: No
Locale: Rural: Distant
NCES school ID: 173585003728

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: 11931.5% 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.